51311611315 has 16 divisors (see below), whose sum is σ = 64017182880. Its totient is φ = 39450343680.

The previous prime is 51311611313. The next prime is 51311611327.

51311611315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51311611315 - 2¹ = 51311611313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51311611313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1854180 + ... + 1881649.

It is an arithmetic number, because the mean of its divisors is an integer number (4001073930).

Almost surely, 2^51311611315 is an apocalyptic number.

51311611315 is a deficient number, since it is larger than the sum of its proper divisors (12705571565).

51311611315 is a wasteful number, since it uses less digits than its factorization.

51311611315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735942.

The product of its digits is 1350, while the sum is 28.

The spelling of 51311611315 in words is "fifty-one billion, three hundred eleven million, six hundred eleven thousand, three hundred fifteen".