Perfect Square
80998873635915755776 is a perfect square (8999937424 × 8999937424)
80998873635915755776 is a perfect square (8999937424 × 8999937424)
80998873635915755776 is even
Previous even number is 80998873635915755774
Next even number is 80998873635915755778
531418830084021532142248177023886187485146911145710715928576
1000110010000010101110011100110101111100011100000101111000100000000