515989887090 has 16 divisors (see below), whose sum is σ = 1238375729088. Its totient is φ = 137597303216.

The previous prime is 515989887067. The next prime is 515989887209. The reversal of 515989887090 is 90788989515.

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, 8599831422 + ... + 8599831481.

It is an arithmetic number, because the mean of its divisors is an integer number (77398483068).

Almost surely, 2^515989887090 is an apocalyptic number.

515989887090 is an abundant number, since it is smaller than the sum of its proper divisors (722385841998).

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

515989887090 is a wasteful number, since it uses less digits than its factorization.

515989887090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17199662913.

The product of its (nonzero) digits is 65318400, while the sum is 69.

The spelling of 515989887090 in words is "five hundred fifteen billion, nine hundred eighty-nine million, eight hundred eighty-seven thousand, ninety".