16993113804 has 18 divisors (see below), whose sum is σ = 42954815540. Its totient is φ = 5664371256.

The previous prime is 16993113803. The next prime is 16993113821. The reversal of 16993113804 is 40831139961.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 16993113804.

It is not an unprimeable number, because it can be changed into a prime (16993113803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236015434 + ... + 236015505.

Almost surely, 2^16993113804 is an apocalyptic number.

It is an amenable number.

16993113804 is an abundant number, since it is smaller than the sum of its proper divisors (25961701736).

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

16993113804 is a wasteful number, since it uses less digits than its factorization.

16993113804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472030949 (or 472030944 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 16993113804 in words is "sixteen billion, nine hundred ninety-three million, one hundred thirteen thousand, eight hundred four".