51513617012604 has 48 divisors (see below), whose sum is σ = 124060114953600. Its totient is φ = 16628225461056.

The previous prime is 51513617012591. The next prime is 51513617012621. The reversal of 51513617012604 is 40621071631515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542932759 + ... + 543027630.

It is an arithmetic number, because the mean of its divisors is an integer number (2584585728200).

Almost surely, 2^{51513617012604} is an apocalyptic number.

It is an amenable number.

51513617012604 is an abundant number, since it is smaller than the sum of its proper divisors (72546497940996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51513617012604 is a wasteful number, since it uses less digits than its factorization.

51513617012604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085960522 (or 1085960520 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 51513617012604 in words is "fifty-one trillion, five hundred thirteen billion, six hundred seventeen million, twelve thousand, six hundred four".