51202615660 has 36 divisors (see below), whose sum is σ = 125080677792. Its totient is φ = 17555182176.

The previous prime is 51202615621. The next prime is 51202615679. The reversal of 51202615660 is 6651620215.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26122804 + ... + 26124763.

It is an arithmetic number, because the mean of its divisors is an integer number (3474463272).

Almost surely, 2^51202615660 is an apocalyptic number.

It is an amenable number.

51202615660 is an abundant number, since it is smaller than the sum of its proper divisors (73878062132).

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

51202615660 is a wasteful number, since it uses less digits than its factorization.

51202615660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52247590 (or 52247581 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 51202615660 in words is "fifty-one billion, two hundred two million, six hundred fifteen thousand, six hundred sixty".