Second half of the chessboard

There are 264 − 232 = 18,446,744,069,414,584,320 grains on the second half of the chessboard., English Wikipedia
There are 264 − 248 = 18,446,462,598,732,840,960 grains on the last quarter of the chessboard.
== Sources ==
Category:Numbers
Category:Chess
Category:Class 2
Category:Even numbers
Category:Non-powers
Category:Numbers with 7 to 29 digits