16505065315 has 32 divisors (see below), whose sum is σ = 21192399360. Its totient is φ = 12296793600.

The previous prime is 16505065279. The next prime is 16505065321. The reversal of 16505065315 is 51356050561.

It is not a de Polignac number, because 16505065315 - 2²⁵ = 16471510883 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4218210 + ... + 4222120.

It is an arithmetic number, because the mean of its divisors is an integer number (662262480).

Almost surely, 2^16505065315 is an apocalyptic number.

16505065315 is a deficient number, since it is larger than the sum of its proper divisors (4687334045).

16505065315 is a wasteful number, since it uses less digits than its factorization.

16505065315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443.

The product of its (nonzero) digits is 67500, while the sum is 37.

The spelling of 16505065315 in words is "sixteen billion, five hundred five million, sixty-five thousand, three hundred fifteen".