51566003156 has 12 divisors (see below), whose sum is σ = 90693976800. Its totient is φ = 25653438360.

The previous prime is 51566003149. The next prime is 51566003171. The reversal of 51566003156 is 65130066515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32389910 + ... + 32391501.

It is an arithmetic number, because the mean of its divisors is an integer number (7557831400).

Almost surely, 2^51566003156 is an apocalyptic number.

It is an amenable number.

51566003156 is a deficient number, since it is larger than the sum of its proper divisors (39127973644).

51566003156 is a wasteful number, since it uses less digits than its factorization.

51566003156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64781614 (or 64781612 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 51566003156 in words is "fifty-one billion, five hundred sixty-six million, three thousand, one hundred fifty-six".