16604037404 has 12 divisors (see below), whose sum is σ = 29285862144. Its totient is φ = 8236648224.

The previous prime is 16604037397. The next prime is 16604037407. The reversal of 16604037404 is 40473040661.

It is a super-2 number, since 2×16604037404² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604037407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16342049 + ... + 16343064.

It is an arithmetic number, because the mean of its divisors is an integer number (2440488512).

Almost surely, 2^16604037404 is an apocalyptic number.

It is an amenable number.

16604037404 is a deficient number, since it is larger than the sum of its proper divisors (12681824740).

16604037404 is a wasteful number, since it uses less digits than its factorization.

16604037404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32685244 (or 32685242 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 16604037404 in words is "sixteen billion, six hundred four million, thirty-seven thousand, four hundred four".