16660890804 has 48 divisors (see below), whose sum is σ = 40816238400. Its totient is φ = 5282086656.

The previous prime is 16660890803. The next prime is 16660890809. The reversal of 16660890804 is 40809806661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660890803) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 333969 + ... + 380600.

It is an arithmetic number, because the mean of its divisors is an integer number (850338300).

Almost surely, 2^16660890804 is an apocalyptic number.

It is an amenable number.

16660890804 is an abundant number, since it is smaller than the sum of its proper divisors (24155347596).

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

16660890804 is a wasteful number, since it uses less digits than its factorization.

16660890804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714672 (or 714670 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 16660890804 in words is "sixteen billion, six hundred sixty million, eight hundred ninety thousand, eight hundred four".