51565010560 has 64 divisors (see below), whose sum is σ = 140882987520. Its totient is φ = 17679430656.

The previous prime is 51565010557. The next prime is 51565010579. The reversal of 51565010560 is 6501056515.

It is a tau number, because it is divible by the number of its divisors (64).

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, 5750544 + ... + 5759503.

It is an arithmetic number, because the mean of its divisors is an integer number (2201296680).

Almost surely, 2^51565010560 is an apocalyptic number.

It is an amenable number.

51565010560 is an abundant number, since it is smaller than the sum of its proper divisors (89317976960).

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

51565010560 is a wasteful number, since it uses less digits than its factorization.

51565010560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11510073 (or 11510061 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51565010560 in words is "fifty-one billion, five hundred sixty-five million, ten thousand, five hundred sixty".