51415265792 has 90 divisors (see below), whose sum is σ = 113042307147. Its totient is φ = 23344921600.

The previous prime is 51415265777. The next prime is 51415265831. The reversal of 51415265792 is 29756251415.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 25707632896 + 25707632896 = 160336^2 + 160336^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=160336.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56437817 + ... + 56438727.

Almost surely, 2^51415265792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51415265792

51415265792 is an abundant number, since it is smaller than the sum of its proper divisors (61627041355).

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

51415265792 is an frugal number, since it uses more digits than its factorization.

51415265792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862 (or 924 counting only the distinct ones).

The product of its digits is 756000, while the sum is 47.

The spelling of 51415265792 in words is "fifty-one billion, four hundred fifteen million, two hundred sixty-five thousand, seven hundred ninety-two".