Dictionary.com
Thesaurus.com

exbi-

British  

combining form

  1. computing denoting 2 to the power 60

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of exbi-

C20: from ex ( a- ) + bi ( nary )