51731058315775 has 12 divisors (see below), whose sum is σ = 64540049201992. Its totient is φ = 41130951884640.

The previous prime is 51731058315767. The next prime is 51731058315793. The reversal of 51731058315775 is 57751385013715.

It is not a de Polignac number, because 51731058315775 - 2³ = 51731058315767 is a prime.

It is a super-2 number, since 2×51731058315775² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6347365044 + ... + 6347373193.

Almost surely, 2^{51731058315775} is an apocalyptic number.

51731058315775 is a deficient number, since it is larger than the sum of its proper divisors (12808990886217).

51731058315775 is a wasteful number, since it uses less digits than its factorization.

51731058315775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12694738410 (or 12694738405 counting only the distinct ones).

The product of its (nonzero) digits is 15435000, while the sum is 58.

The spelling of 51731058315775 in words is "fifty-one trillion, seven hundred thirty-one billion, fifty-eight million, three hundred fifteen thousand, seven hundred seventy-five".