Power of Two
260 = 1152921504606846976
260 = 1152921504606846976
1152921504606846976 is a perfect square (1073741824 × 1073741824)
1152921504606846976 is even
Previous even number is 1152921504606846974
Next even number is 1152921504606846978
1000000000000000000000000000000000000000000000000000000000000