16644899404 has 12 divisors (see below), whose sum is σ = 33289798864. Its totient is φ = 7133528304.

The previous prime is 16644899399. The next prime is 16644899419. The reversal of 16644899404 is 40499844661.

16644899404 is an admirable number.

It is a super-3 number, since 3×16644899404³ (a number of 32 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297230319 + ... + 297230374.

Almost surely, 2^16644899404 is an apocalyptic number.

16644899404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16644899404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16644899404 is a wasteful number, since it uses less digits than its factorization.

16644899404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594460704 (or 594460702 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 55.

The spelling of 16644899404 in words is "sixteen billion, six hundred forty-four million, eight hundred ninety-nine thousand, four hundred four".