51056564316 has 12 divisors (see below), whose sum is σ = 119131983432. Its totient is φ = 17018854768.

The previous prime is 51056564263. The next prime is 51056564327. The reversal of 51056564316 is 61346565015.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127356835 + ... + 2127356858.

It is an arithmetic number, because the mean of its divisors is an integer number (9927665286).

Almost surely, 2^51056564316 is an apocalyptic number.

It is an amenable number.

51056564316 is an abundant number, since it is smaller than the sum of its proper divisors (68075419116).

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

51056564316 is a wasteful number, since it uses less digits than its factorization.

51056564316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254713700 (or 4254713698 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 51056564316 in words is "fifty-one billion, fifty-six million, five hundred sixty-four thousand, three hundred sixteen".