51679172615 has 32 divisors (see below), whose sum is σ = 75299863680. Its totient is φ = 33290417664.

The previous prime is 51679172591. The next prime is 51679172659. The reversal of 51679172615 is 51627197615.

It is not a de Polignac number, because 51679172615 - 2²⁰ = 51678124039 is a prime.

It is a congruent number.

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, 650492 + ... + 725601.

It is an arithmetic number, because the mean of its divisors is an integer number (2353120740).

Almost surely, 2^51679172615 is an apocalyptic number.

51679172615 is a deficient number, since it is larger than the sum of its proper divisors (23620691065).

51679172615 is a wasteful number, since it uses less digits than its factorization.

51679172615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376171.

The product of its digits is 793800, while the sum is 50.

The spelling of 51679172615 in words is "fifty-one billion, six hundred seventy-nine million, one hundred seventy-two thousand, six hundred fifteen".