13613011161 has 4 divisors (see below), whose sum is σ = 18150681552. Its totient is φ = 9075340772.

The previous prime is 13613011129. The next prime is 13613011169. The reversal of 13613011161 is 16111031631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13613011161 - 2⁵ = 13613011129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13613011169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268835191 + ... + 2268835196.

It is an arithmetic number, because the mean of its divisors is an integer number (4537670388).

Almost surely, 2^13613011161 is an apocalyptic number.

It is an amenable number.

13613011161 is a deficient number, since it is larger than the sum of its proper divisors (4537670391).

13613011161 is an equidigital number, since it uses as much as digits as its factorization.

13613011161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537670390.

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 13613011161 its reverse (16111031631), we get a palindrome (29724042792).

The spelling of 13613011161 in words is "thirteen billion, six hundred thirteen million, eleven thousand, one hundred sixty-one".