51715651715 has 64 divisors (see below), whose sum is σ = 79104936960. Its totient is φ = 31569108480.

The previous prime is 51715651697. The next prime is 51715651723.

51715651715 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51715651715 - 2⁶ = 51715651651 is a prime.

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, 15449672 + ... + 15453018.

It is an arithmetic number, because the mean of its divisors is an integer number (1236014640).

Almost surely, 2^51715651715 is an apocalyptic number.

51715651715 is a deficient number, since it is larger than the sum of its proper divisors (27389285245).

51715651715 is a wasteful number, since it uses less digits than its factorization.

51715651715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572.

The product of its digits is 183750, while the sum is 44.

The spelling of 51715651715 in words is "fifty-one billion, seven hundred fifteen million, six hundred fifty-one thousand, seven hundred fifteen".