Back to explorer

entry

quinquagintillion

/ˌkwɪŋkwəˈdʒɪntɪljən/

A number with 153 zeros after one

From Latin quīnquāgintā (fifty).

noun
adjective
quinquaginta
Classical Latin
Verified
quīnquāgintā
“fifty”; the numerical base of the word

from Latin quīnquāgintā (“fifty”) +‎ -illion.

English combining form
Verified
quinquagint-
Used in the systematic naming of extremely large numbers

from Latin quīnquāgintā (“fifty”) +‎ -illion.

-illion
English numerical suffix
AI-inferred
-illion
Suffix used to form names for immense powers of ten
English
AI-inferred
-illion
Attached to quinquagint- to create the full number name
Combined
quinquagint- + -illion → quinquagintillion
The Latin-derived numeral stem combines with the English large-number suffix.
Modern English
AI-inferred
quinquagintillion
In the short scale, 1 followed by 153 zeros; the name is mainly textual rather than mathematical.
Modern English
quinquagintillion

Picture a Roman clerk writing quīnquāgintā—“fifty”—on a wax tablet, and you are already holding the oldest piece of quinquagintillion. The other piece, -illion, belongs to the later European habit of building ever-larger number names from familiar numerical patterns. Put them together and “fifty” somehow becomes a number with 153 zeros after the one, a linguistic escalator carrying a modest Roman numeral into the far reaches of modern arithmetic. In ordinary writing, such names can be shorter than printing the full decimal expansion, though scientific notation leaves them looking rather overdressed. The word is also useful as comic exaggeration: claiming “a quinquagintillion dollars” turns impossible wealth into a joke you can pronounce.

§