quadrillion

noun

1. the number that is represented as a one followed by 24 zeros

- in England they call a septillion a quadrillion

Definition categories: quantity

2. the number that is represented as a one followed by 15 zeros

Definition categories: quantity

numeral

1. (US, modern British and Australian, short scale) A thousand trillion: 1 followed by fifteen zeros, 1015.

2. (dated, Britain, Australia, long scale) A million trillion: 1 followed by twenty-four zeros, 1024.