septillion
Thousand raised eightfold
Septillion is an enormous number whose value depends on which side of the Atlantic you're on.
In American usage, a septillion is 1 followed by 24 zeros (10²⁴).
In traditional British usage, it's 1 followed by 42 zeros (10⁴²), though the American convention has become more common globally.
Numbers this large appear mainly in scientific contexts, such as estimating atoms in a substance or stars in the observable universe.
Ten to the thirtieth
- centillionEnormous named integer
- googolTen to the hundredth
- googolplexTen raised to googol
- exponentialIncreasing by constant ratio
astronomical · incomprehensible · unfathomable · immensity · vastness · boundless · limitless · incalculable
Smallest elemental units
- starsLuminous celestial bodies
- moleculesBonded atomic groups
- particlesMinute pieces of matter
- galaxiesGravitationally bound stellar assemblies
cells · bacteria · planetary · stellar · interstellar · estimation · calculation · magnitude
Symbol denoting quantity
Wealth or destiny
- wealthAbundance of valuable resources
- infinityUnlimited extent or quantity
- countlessToo numerous to count
- innumerableToo many to count
zillions · gazillions · bajillions · exaggeration · rhetorical · inconceivable · unimaginable · fantasy
nonillion
Ten to the thirtieth
- centillionEnormous named integer
- googolTen to the hundredth
- googolplexTen raised to googol
exponential · astronomical · incomprehensible · unfathomable · immensity · vastness · boundless · limitless · incalculable · staggering
atoms
Smallest elemental units
galaxies · cells · bacteria · planetary · stellar · interstellar · estimation · calculation · magnitude
numeral
Symbol denoting quantity
zeros · cardinal · ordinal · positional · nomenclature
fortune
Wealth or destiny
- wealthAbundance of valuable resources
- infinityUnlimited extent or quantity
- countlessToo numerous to count
innumerable · zillions · gazillions · bajillions · exaggeration · rhetorical · inconceivable · unimaginable · fantasy
- quantitiessome, many, few, amount, several
- large numbersnonillion, googol, googolplex, thousand, centillion
septillionzero
Numerical absence of quantity
nothing · one · nil · infinitesimal · naught
septillioninfinite
Having no bounds
infinity · uncountable · boundless · limitless · innumerable
million, trillion, billion, quadrillion, quintillion, octillion, decillion, sextillion