16604553265 has 16 divisors (see below), whose sum is σ = 20272576896. Its totient is φ = 13054204800.

The previous prime is 16604553257. The next prime is 16604553331. The reversal of 16604553265 is 56235540661.

It is not a de Polignac number, because 16604553265 - 2³ = 16604553257 is a prime.

It is a super-2 number, since 2×16604553265² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55596 + ... + 190525.

It is an arithmetic number, because the mean of its divisors is an integer number (1267036056).

Almost surely, 2^16604553265 is an apocalyptic number.

It is an amenable number.

16604553265 is a deficient number, since it is larger than the sum of its proper divisors (3668023631).

16604553265 is a wasteful number, since it uses less digits than its factorization.

16604553265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246360.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 16604553265 in words is "sixteen billion, six hundred four million, five hundred fifty-three thousand, two hundred sixty-five".