51676467615 has 64 divisors (see below), whose sum is σ = 96803251200. Its totient is φ = 26083555200.

The previous prime is 51676467593. The next prime is 51676467671.

It is a happy number.

51676467615 is a `hidden beast` number, since 5 + 16 + 7 + 6 + 4 + 6 + 7 + 615 = 666.

51676467615 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51676467615 - 2⁷ = 51676467487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2634745 + ... + 2654285.

It is an arithmetic number, because the mean of its divisors is an integer number (1512550800).

Almost surely, 2^51676467615 is an apocalyptic number.

51676467615 is a deficient number, since it is larger than the sum of its proper divisors (45126783585).

51676467615 is a wasteful number, since it uses less digits than its factorization.

51676467615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20605 (or 20599 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 51676467615 in words is "fifty-one billion, six hundred seventy-six million, four hundred sixty-seven thousand, six hundred fifteen".