Perfect Square
5200712872109009896114704400 is a perfect square (72115968218620 × 72115968218620)
5200712872109009896114704400 is a perfect square (72115968218620 × 72115968218620)
5200712872109009896114704400 is even
Previous even number is 5200712872109009896114704398
Next even number is 5200712872109009896114704402
140665836113556798203152659507172564413847685888653897803544657471629729861184000000
100001100110111101101110010011011100001111111100001010000011111110000100010110101000000010000