2160665616 has 40 divisors (see below), whose sum is σ = 5732581504. Its totient is φ = 700755840.

The previous prime is 2160665593. The next prime is 2160665641. The reversal of 2160665616 is 6165660612.

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, 606520 + ... + 610071.

Almost surely, 2^2160665616 is an apocalyptic number.

It is an amenable number.

2160665616 is an abundant number, since it is smaller than the sum of its proper divisors (3571915888).

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

2160665616 is a wasteful number, since it uses less digits than its factorization.

2160665616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216639 (or 1216633 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 2160665616 is about 46482.9604909154. The cubic root of 2160665616 is about 1292.7935805862.

The spelling of 2160665616 in words is "two billion, one hundred sixty million, six hundred sixty-five thousand, six hundred sixteen".