quintillion
numeral
1. (US, modern British & Australian, short scale) A billion billion: 1 followed by eighteen zeros, 1018.
2. (dated, British & Australian, long scale) A million quadrillion: 1 followed by 30 zeros, 1030.
1. (US, modern British & Australian, short scale) A billion billion: 1 followed by eighteen zeros, 1018.
2. (dated, British & Australian, long scale) A million quadrillion: 1 followed by 30 zeros, 1030.