Perfect Square
81535270718209736746081 is a perfect square (285543815759 × 285543815759)
81535270718209736746081 is a perfect square (285543815759 × 285543815759)
81535270718209736746081 is odd
Previous odd number is 81535270718209736746079
Next odd number is 81535270718209736746083
10001010001000000100100101111100101011101010101001000001100101010010001100001
542046509991724637238115997001393108945517198216770274319633760049441