Perfect Square
16777215999997902847999999901696000000010240000000000400 is a perfect square (4095999999999743999999999980 × 4095999999999743999999999980)
16777215999997902847999999901696000000010240000000000400 is a perfect square (4095999999999743999999999980 × 4095999999999743999999999980)
10101111 00101001 10001101 00000101 00001110 00101011 10000010 11011100 11000110 11110111 10001111 00001011 00100101 10101101 11010101 11101010 10111111 11101111 10111001 11001010 10000000 00000001 10010000
16777215999997902847999999901696000000010240000000000400 is even
Previous even number is 16777215999997902847999999901696000000010240000000000398
Next even number is 16777215999997902847999999901696000000010240000000000402
4722366482867874326264924021395444552841813246330617187474217988148375909222598537465672237600258255749057186103295997651189760000078643200000004915200000000064000000
281474976710585631255822337099511627776755914244095980135776255996309012480000026214400000008192000000000160000
12745143202416127013346157361702622655653652777373471240000620