16163236161 has 6 divisors (see below), whose sum is σ = 23346896690. Its totient is φ = 10775490768.

The previous prime is 16163236153. The next prime is 16163236189.

16163236161 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 32 + 3 + 616 + 1 = 666.

16163236161 is nontrivially palindromic in base 10.

16163236161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 14147675136 + 2015561025 = 118944^2 + 44895^2 .

It is not a de Polignac number, because 16163236161 - 2³ = 16163236153 is a prime.

It is a super-2 number, since 2×16163236161² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16163236151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 897957556 + ... + 897957573.

Almost surely, 2^16163236161 is an apocalyptic number.

It is an amenable number.

16163236161 is a deficient number, since it is larger than the sum of its proper divisors (7183660529).

16163236161 is a wasteful number, since it uses less digits than its factorization.

16163236161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795915135 (or 1795915132 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The spelling of 16163236161 in words is "sixteen billion, one hundred sixty-three million, two hundred thirty-six thousand, one hundred sixty-one".