51537873727 has 12 divisors (see below), whose sum is σ = 54770187640. Its totient is φ = 48486439296.

The previous prime is 51537873719. The next prime is 51537873733. The reversal of 51537873727 is 72737873515.

It is not a de Polignac number, because 51537873727 - 2³ = 51537873719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51537873707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698653 + ... + 768889.

Almost surely, 2^51537873727 is an apocalyptic number.

51537873727 is a deficient number, since it is larger than the sum of its proper divisors (3232313913).

51537873727 is a wasteful number, since it uses less digits than its factorization.

51537873727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72810 (or 72793 counting only the distinct ones).

The product of its digits is 8643600, while the sum is 55.

The spelling of 51537873727 in words is "fifty-one billion, five hundred thirty-seven million, eight hundred seventy-three thousand, seven hundred twenty-seven".