51696044860 has 24 divisors (see below), whose sum is σ = 108762385536. Its totient is φ = 20640191040.

The previous prime is 51696044833. The next prime is 51696044969. The reversal of 51696044860 is 6844069615.

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, 2378092 + ... + 2399731.

It is an arithmetic number, because the mean of its divisors is an integer number (4531766064).

Almost surely, 2^51696044860 is an apocalyptic number.

It is an amenable number.

51696044860 is an abundant number, since it is smaller than the sum of its proper divisors (57066340676).

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

51696044860 is a wasteful number, since it uses less digits than its factorization.

51696044860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4778373 (or 4778371 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 51696044860 in words is "fifty-one billion, six hundred ninety-six million, forty-four thousand, eight hundred sixty".