51236663215 has 24 divisors (see below), whose sum is σ = 65062394640. Its totient is φ = 38729021184.

The previous prime is 51236663189. The next prime is 51236663221.

51236663215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51236663215 - 2⁵ = 51236663183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 646647 + ... + 721543.

It is an arithmetic number, because the mean of its divisors is an integer number (2710933110).

Almost surely, 2^51236663215 is an apocalyptic number.

51236663215 is a deficient number, since it is larger than the sum of its proper divisors (13825731425).

51236663215 is a wasteful number, since it uses less digits than its factorization.

51236663215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75319 (or 75300 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The spelling of 51236663215 in words is "fifty-one billion, two hundred thirty-six million, six hundred sixty-three thousand, two hundred fifteen".