65680463524 has 27 divisors (see below), whose sum is σ = 124475163267. Its totient is φ = 30310984704.

The previous prime is 65680463503. The next prime is 65680463549. The reversal of 65680463524 is 42536408656.

The square root of 65680463524 is 256282.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 16414221924 + 49266241600 = 128118^2 + 221960^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6658404 + ... + 6668260.

Almost surely, 2^65680463524 is an apocalyptic number.

65680463524 is the 256282-nd square number.

It is an amenable number.

65680463524 is a deficient number, since it is larger than the sum of its proper divisors (58794699743).

65680463524 is an frugal number, since it uses more digits than its factorization.

65680463524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19744 (or 9872 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 49.

Multiplying 65680463524 by its sum of digits (49), we get a square (3218342712676 = 1793974²).

The spelling of 65680463524 in words is "sixty-five billion, six hundred eighty million, four hundred sixty-three thousand, five hundred twenty-four".