16808566631121 has 12 divisors (see below), whose sum is σ = 24311894610640. Its totient is φ = 11190547739160.

The previous prime is 16808566631111. The next prime is 16808566631123. The reversal of 16808566631121 is 12113666580861.

It is not a de Polignac number, because 16808566631121 - 2⁵ = 16808566631089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16808566631123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1263605335 + ... + 1263618636.

Almost surely, 2^{16808566631121} is an apocalyptic number.

It is an amenable number.

16808566631121 is a deficient number, since it is larger than the sum of its proper divisors (7503327979519).

16808566631121 is a wasteful number, since it uses less digits than its factorization.

16808566631121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527224716 (or 2527224713 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 16808566631121 in words is "sixteen trillion, eight hundred eight billion, five hundred sixty-six million, six hundred thirty-one thousand, one hundred twenty-one".