6315916665 has 32 divisors (see below), whose sum is σ = 10340029440. Its totient is φ = 3291005376.

The previous prime is 6315916639. The next prime is 6315916681. The reversal of 6315916665 is 5666195136.

It is not a de Polignac number, because 6315916665 - 2¹¹ = 6315914617 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, 122364 + ... + 166146.

It is an arithmetic number, because the mean of its divisors is an integer number (323125920).

Almost surely, 2^6315916665 is an apocalyptic number.

It is an amenable number.

6315916665 is a deficient number, since it is larger than the sum of its proper divisors (4024112775).

6315916665 is a wasteful number, since it uses less digits than its factorization.

6315916665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44013.

The product of its digits is 874800, while the sum is 48.

The square root of 6315916665 is about 79472.7416476870. The cubic root of 6315916665 is about 1848.4688246044.

The spelling of 6315916665 in words is "six billion, three hundred fifteen million, nine hundred sixteen thousand, six hundred sixty-five".