13204656161 has 4 divisors (see below), whose sum is σ = 13511741232. Its totient is φ = 12897571092.

The previous prime is 13204656149. The next prime is 13204656167. The reversal of 13204656161 is 16165640231.

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 13204656161 - 2¹⁰ = 13204655137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13204656167) 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, 153542471 + ... + 153542556.

It is an arithmetic number, because the mean of its divisors is an integer number (3377935308).

Almost surely, 2^13204656161 is an apocalyptic number.

It is an amenable number.

13204656161 is a deficient number, since it is larger than the sum of its proper divisors (307085071).

13204656161 is an equidigital number, since it uses as much as digits as its factorization.

13204656161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307085070.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 13204656161 in words is "thirteen billion, two hundred four million, six hundred fifty-six thousand, one hundred sixty-one".