quintilliard

number1

1. •
   (rare) A thousand million million million million million: 1 followed by thirty-three zeros, 10³³.

   • With the Triple DES implementation of DES, there are 5 100 000 000 000 000 000 000 000 000 000 000 (5.1 quintilliard) or more possible encryption keys that can be used. — 2000