16917185923 has 16 divisors (see below), whose sum is σ = 18571667040. Its totient is φ = 15282432000.

The previous prime is 16917185903. The next prime is 16917185927. The reversal of 16917185923 is 32958171961.

It is not a de Polignac number, because 16917185923 - 2²⁵ = 16883631491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16917185927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167523 + ... + 1181923.

It is an arithmetic number, because the mean of its divisors is an integer number (1160729190).

Almost surely, 2^16917185923 is an apocalyptic number.

16917185923 is a deficient number, since it is larger than the sum of its proper divisors (1654481117).

16917185923 is a wasteful number, since it uses less digits than its factorization.

16917185923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15078.

The product of its digits is 816480, while the sum is 52.

The spelling of 16917185923 in words is "sixteen billion, nine hundred seventeen million, one hundred eighty-five thousand, nine hundred twenty-three".