51171055715 has 32 divisors (see below), whose sum is σ = 66567009600. Its totient is φ = 37537896960.

The previous prime is 51171055709. The next prime is 51171055739. The reversal of 51171055715 is 51755017115.

It is not a de Polignac number, because 51171055715 - 2¹² = 51171051619 is a prime.

It is a super-2 number, since 2×51171055715² (a number of 22 digits) contains 22 as substring.

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, 14457416 + ... + 14460954.

It is an arithmetic number, because the mean of its divisors is an integer number (2080219050).

Almost surely, 2^51171055715 is an apocalyptic number.

51171055715 is a deficient number, since it is larger than the sum of its proper divisors (15395953885).

51171055715 is a wasteful number, since it uses less digits than its factorization.

51171055715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967.

The product of its (nonzero) digits is 30625, while the sum is 38.

The spelling of 51171055715 in words is "fifty-one billion, one hundred seventy-one million, fifty-five thousand, seven hundred fifteen".