51207051656 has 16 divisors (see below), whose sum is σ = 99110423040. Its totient is φ = 24777605520.

The previous prime is 51207051647. The next prime is 51207051667. The reversal of 51207051656 is 65615070215.

51207051656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103239776 + ... + 103240271.

It is an arithmetic number, because the mean of its divisors is an integer number (6194401440).

Almost surely, 2^51207051656 is an apocalyptic number.

It is an amenable number.

51207051656 is a deficient number, since it is larger than the sum of its proper divisors (47903371384).

51207051656 is a wasteful number, since it uses less digits than its factorization.

51207051656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206480084 (or 206480080 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 51207051656 in words is "fifty-one billion, two hundred seven million, fifty-one thousand, six hundred fifty-six".