Perfect Square
6553599999999999979520000000000000016 is a perfect square (2559999999999999996 × 2559999999999999996)
6553599999999999979520000000000000016 is a perfect square (2559999999999999996 × 2559999999999999996)
6553599999999999979520000000000000016 is even
Previous even number is 6553599999999999979520000000000000014
Next even number is 6553599999999999979520000000000000018
281474976710655997361172093337600010307921510399999978525163520000000025165823999999999984271360000000000004096
42949672959999999731564544000000000629145599999999999344640000000000000256
100111011100010110101101101010000010101101110000101101010111101001101001001011011001000000111111000000000000000000000010000