51331683792 has 40 divisors (see below), whose sum is σ = 139586160160. Its totient is φ = 16210005120.

The previous prime is 51331683779. The next prime is 51331683817. The reversal of 51331683792 is 29738613315.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 28141459 + ... + 28143282.

It is an arithmetic number, because the mean of its divisors is an integer number (3489654004).

Almost surely, 2^51331683792 is an apocalyptic number.

It is an amenable number.

51331683792 is an abundant number, since it is smaller than the sum of its proper divisors (88254476368).

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

51331683792 is a wasteful number, since it uses less digits than its factorization.

51331683792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56284771 (or 56284765 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The spelling of 51331683792 in words is "fifty-one billion, three hundred thirty-one million, six hundred eighty-three thousand, seven hundred ninety-two".