51731908675 has 6 divisors (see below), whose sum is σ = 64147566788. Its totient is φ = 41385526920.

The previous prime is 51731908663. The next prime is 51731908721. The reversal of 51731908675 is 57680913715.

It is a de Polignac number, because none of the positive numbers 2^k-51731908675 is a prime.

It is a super-3 number, since 3×51731908675³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1034638149 + ... + 1034638198.

Almost surely, 2^51731908675 is an apocalyptic number.

51731908675 is a deficient number, since it is larger than the sum of its proper divisors (12415658113).

51731908675 is a wasteful number, since it uses less digits than its factorization.

51731908675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069276357 (or 2069276352 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 52.

The spelling of 51731908675 in words is "fifty-one billion, seven hundred thirty-one million, nine hundred eight thousand, six hundred seventy-five".