51365856315 has 32 divisors (see below), whose sum is σ = 83482624512. Its totient is φ = 26964000000.

The previous prime is 51365856307. The next prime is 51365856343.

51365856315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51365856315 - 2³ = 51365856307 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 599940 + ... + 680190.

It is an arithmetic number, because the mean of its divisors is an integer number (2608832016).

Almost surely, 2^51365856315 is an apocalyptic number.

51365856315 is a deficient number, since it is larger than the sum of its proper divisors (32116768197).

51365856315 is a wasteful number, since it uses less digits than its factorization.

51365856315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80931.

The product of its digits is 1620000, while the sum is 48.

Adding to 51365856315 its product of digits (1620000), we get a palindrome (51367476315).

The spelling of 51365856315 in words is "fifty-one billion, three hundred sixty-five million, eight hundred fifty-six thousand, three hundred fifteen".