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septillion

noun, often attributive
sep·​til·​lion | \ sep-ˈtil-yən How to pronounce septillion (audio) \

Definition of septillion

US : a number equal to 1 followed by 24 zeros — see Table of Numbers also, British : a number equal to 1 followed by 42 zeros — see Table of Numbers

Examples of septillion in a Sentence

Recent Examples on the Web

 The number of possible routes adds up to around 15 septillion (trillion trillion), according to Goldman Sachs, an investment bank. — The Economist, "In algorithms we trustHow AI is spreading throughout the supply chain," 28 Mar. 2018

First Known Use of septillion

1690, in the meaning defined above

History and Etymology for septillion

French, from Latin septem + French -illion (as in million) — more at seven

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