51036664679 has 16 divisors (see below), whose sum is σ = 68524753920. Its totient is φ = 36709688160.

The previous prime is 51036664667. The next prime is 51036664727. The reversal of 51036664679 is 97646663015.

It is a cyclic number.

It is not a de Polignac number, because 51036664679 - 2²⁸ = 50768229223 is a prime.

It is a super-2 number, since 2×51036664679² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51036664679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51036664379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25491839 + ... + 25493840.

It is an arithmetic number, because the mean of its divisors is an integer number (4282797120).

Almost surely, 2^51036664679 is an apocalyptic number.

51036664679 is a deficient number, since it is larger than the sum of its proper divisors (17488089241).

51036664679 is a wasteful number, since it uses less digits than its factorization.

51036664679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50985710.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 51036664679 in words is "fifty-one billion, thirty-six million, six hundred sixty-four thousand, six hundred seventy-nine".