16604450065 has 8 divisors (see below), whose sum is σ = 22771817280. Its totient is φ = 11385908592.

The previous prime is 16604450029. The next prime is 16604450101. The reversal of 16604450065 is 56005440661.

It is an interprime number because it is at equal distance from previous prime (16604450029) and next prime (16604450101).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16604450065 - 2²⁵ = 16570895633 is a prime.

It is a super-2 number, since 2×16604450065² (a number of 21 digits) contains 22 as substring.

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, 237206395 + ... + 237206464.

It is an arithmetic number, because the mean of its divisors is an integer number (2846477160).

Almost surely, 2^16604450065 is an apocalyptic number.

It is an amenable number.

16604450065 is a deficient number, since it is larger than the sum of its proper divisors (6167367215).

16604450065 is an equidigital number, since it uses as much as digits as its factorization.

16604450065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474412871.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 16604450065 in words is "sixteen billion, six hundred four million, four hundred fifty thousand, sixty-five".