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What is the difference between trillion and septillion?

trillion | septillion |

trillion

English

(Long and short scales)

Numeral

(head)
  • A million million: 1 followed by twelve zeros, 1012.
  • A million million million: 1 followed by eighteen zeros, 1018.

    • See also

    * (short scale) Previous': billion. ' Next : quadrillion * (long scale) Previous': billiard. ' Next : trilliard * ISO prefix: tera-

    septillion

    English

    Numeral

    (head)
  • (US; modern British & Australian, ) A trillion trillion: 1 followed by 24 zeros, 1024.
  • (dated British & Australian, ) A billion quintillion: 1 followed by 42 zeros, 1042.

    • See also

    * (short and long scale) Previous': sextillion. ' Next : octillion.

    Synonyms

    * 1024: a quadrillion * 1042: a tredecillion

    Anagrams

    * English cardinal numbers