51696863232 has 96 divisors (see below), whose sum is σ = 157514011200. Its totient is φ = 14770520064.

The previous prime is 51696863209. The next prime is 51696863291. The reversal of 51696863232 is 23236869615.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×51696863232² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558007 + ... + 644022.

It is an arithmetic number, because the mean of its divisors is an integer number (1640770950).

Almost surely, 2^51696863232 is an apocalyptic number.

It is an amenable number.

51696863232 is an abundant number, since it is smaller than the sum of its proper divisors (105817147968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51696863232 is a wasteful number, since it uses less digits than its factorization.

51696863232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202061 (or 1202041 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The spelling of 51696863232 in words is "fifty-one billion, six hundred ninety-six million, eight hundred sixty-three thousand, two hundred thirty-two".