Perfect Square
81537712092706791406489 is a perfect square (285548090683 × 285548090683)
81537712092706791406489 is a perfect square (285548090683 × 285548090683)
81537712092706791406489 is odd
Previous odd number is 81537712092706791406487
Next odd number is 81537712092706791406491
10001010001000010101100010001000101110000000011010100110101101011101110011001
542095202225352698546180365485753742332528891375955427708597911308169