51236365612 has 12 divisors (see below), whose sum is σ = 92755489680. Its totient is φ = 24734797136.

The previous prime is 51236365591. The next prime is 51236365619. The reversal of 51236365612 is 21656363215.

It is a super-2 number, since 2×51236365612² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51236365619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220846288 + ... + 220846519.

It is an arithmetic number, because the mean of its divisors is an integer number (7729624140).

Almost surely, 2^51236365612 is an apocalyptic number.

It is an amenable number.

51236365612 is a deficient number, since it is larger than the sum of its proper divisors (41519124068).

51236365612 is a wasteful number, since it uses less digits than its factorization.

51236365612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441692840 (or 441692838 counting only the distinct ones).

The product of its digits is 194400, while the sum is 40.

The spelling of 51236365612 in words is "fifty-one billion, two hundred thirty-six million, three hundred sixty-five thousand, six hundred twelve".