51056056056 has 32 divisors (see below), whose sum is σ = 128811157200. Its totient is φ = 16862549760.

The previous prime is 51056056033. The next prime is 51056056057. The reversal of 51056056056 is 65065065015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056056057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9755805 + ... + 9761036.

Almost surely, 2^51056056056 is an apocalyptic number.

It is an amenable number.

51056056056 is an abundant number, since it is smaller than the sum of its proper divisors (77755101144).

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

51056056056 is a wasteful number, since it uses less digits than its factorization.

51056056056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19516959 (or 19516955 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 51056056056 in words is "fifty-one billion, fifty-six million, fifty-six thousand, fifty-six".