51000516516 has 24 divisors (see below), whose sum is σ = 119005588800. Its totient is φ = 16999545952.

The previous prime is 51000516493. The next prime is 51000516569. The reversal of 51000516516 is 61561500015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358585 + ... + 480191.

It is an arithmetic number, because the mean of its divisors is an integer number (4958566200).

Almost surely, 2^51000516516 is an apocalyptic number.

It is an amenable number.

51000516516 is an abundant number, since it is smaller than the sum of its proper divisors (68005072284).

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

51000516516 is a wasteful number, since it uses less digits than its factorization.

51000516516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156563 (or 156561 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 51000516516 in words is "fifty-one billion, five hundred sixteen thousand, five hundred sixteen".