51656144155460 has 48 divisors (see below), whose sum is σ = 117021373068096. Its totient is φ = 19040545387392.

The previous prime is 51656144155433. The next prime is 51656144155571. The reversal of 51656144155460 is 6455144165615.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169078622 + ... + 169383861.

It is an arithmetic number, because the mean of its divisors is an integer number (2437945272252).

Almost surely, 2^{51656144155460} is an apocalyptic number.

It is an amenable number.

51656144155460 is an abundant number, since it is smaller than the sum of its proper divisors (65365228912636).

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

51656144155460 is a wasteful number, since it uses less digits than its factorization.

51656144155460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338463092 (or 338463090 counting only the distinct ones).

The product of its (nonzero) digits is 8640000, while the sum is 53.

The spelling of 51656144155460 in words is "fifty-one trillion, six hundred fifty-six billion, one hundred forty-four million, one hundred fifty-five thousand, four hundred sixty".