16608044664 has 96 divisors (see below), whose sum is σ = 46246047120. Its totient is φ = 5380535808.

The previous prime is 16608044659. The next prime is 16608044681. The reversal of 16608044664 is 46644080661.

16608044664 is a `hidden beast` number, since 16 + 60 + 80 + 446 + 64 = 666.

It is a super-2 number, since 2×16608044664² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2919567 + ... + 2925249.

Almost surely, 2^16608044664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16608044664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23123023560).

16608044664 is an abundant number, since it is smaller than the sum of its proper divisors (29638002456).

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

16608044664 is a wasteful number, since it uses less digits than its factorization.

16608044664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829 (or 6822 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 16608044664 in words is "sixteen billion, six hundred eight million, forty-four thousand, six hundred sixty-four".