15616111161 has 16 divisors (see below), whose sum is σ = 23824779264. Its totient is φ = 8912691984.

The previous prime is 15616111129. The next prime is 15616111193. The reversal of 15616111161 is 16111161651.

It is an interprime number because it is at equal distance from previous prime (15616111129) and next prime (15616111193).

It is not a de Polignac number, because 15616111161 - 2⁵ = 15616111129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15616111361) 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, 432225 + ... + 466958.

It is an arithmetic number, because the mean of its divisors is an integer number (1489048704).

Almost surely, 2^15616111161 is an apocalyptic number.

It is an amenable number.

15616111161 is a deficient number, since it is larger than the sum of its proper divisors (8208668103).

15616111161 is an equidigital number, since it uses as much as digits as its factorization.

15616111161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900020.

The product of its digits is 1080, while the sum is 30.

The spelling of 15616111161 in words is "fifteen billion, six hundred sixteen million, one hundred eleven thousand, one hundred sixty-one".