Perfect Square
71987251059360000 is a perfect square (268304400 × 268304400)
71987251059360000 is a perfect square (268304400 × 268304400)
71987251059360000 is even
Previous even number is 71987251059359998
Next even number is 71987251059360002
11111111 11000000 00000101 11111111 11000000 00000001 00000000