16585111161 has 12 divisors (see below), whose sum is σ = 24362310960. Its totient is φ = 10869338040.

The previous prime is 16585111157. The next prime is 16585111163. The reversal of 16585111161 is 16111158561.

It is a happy number.

16585111161 is a `hidden beast` number, since 1 + 6 + 585 + 1 + 1 + 11 + 61 = 666.

It is not a de Polignac number, because 16585111161 - 2² = 16585111157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16585111163) 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, 15616335 + ... + 15617396.

It is an arithmetic number, because the mean of its divisors is an integer number (2030192580).

Almost surely, 2^16585111161 is an apocalyptic number.

It is an amenable number.

16585111161 is a deficient number, since it is larger than the sum of its proper divisors (7777199799).

16585111161 is a wasteful number, since it uses less digits than its factorization.

16585111161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31233796 (or 31233793 counting only the distinct ones).

The product of its digits is 7200, while the sum is 36.

The spelling of 16585111161 in words is "sixteen billion, five hundred eighty-five million, one hundred eleven thousand, one hundred sixty-one".