16661116608 has 56 divisors (see below), whose sum is σ = 44326180080. Its totient is φ = 5523010560.

The previous prime is 16661116601. The next prime is 16661116609. The reversal of 16661116608 is 80661116661.

It is a self number, because there is not a number n which added to its sum of digits gives 16661116608.

It is not an unprimeable number, because it can be changed into a prime (16661116601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204963 + ... + 274466.

It is an arithmetic number, because the mean of its divisors is an integer number (791538930).

Almost surely, 2^16661116608 is an apocalyptic number.

It is an amenable number.

16661116608 is an abundant number, since it is smaller than the sum of its proper divisors (27665063472).

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

16661116608 is a wasteful number, since it uses less digits than its factorization.

16661116608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479625 (or 479615 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 16661116608 in words is "sixteen billion, six hundred sixty-one million, one hundred sixteen thousand, six hundred eight".