16164099904 has 14 divisors (see below), whose sum is σ = 32075635874. Its totient is φ = 8082049920.

The previous prime is 16164099883. The next prime is 16164099911. The reversal of 16164099904 is 40999046161.

It can be written as a sum of positive squares in only one way, i.e., 11653634304 + 4510465600 = 107952^2 + 67160^2 .

It is a super-2 number, since 2×16164099904² (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 as a sum of consecutive naturals, namely, 126281967 + ... + 126282094.

Almost surely, 2^16164099904 is an apocalyptic number.

It is an amenable number.

16164099904 is a deficient number, since it is larger than the sum of its proper divisors (15911535970).

16164099904 is an equidigital number, since it uses as much as digits as its factorization.

16164099904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252564073 (or 252564063 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 16164099904 in words is "sixteen billion, one hundred sixty-four million, ninety-nine thousand, nine hundred four".