12616592161 has 4 divisors (see below), whose sum is σ = 12616833024. Its totient is φ = 12616351300.

The previous prime is 12616592147. The next prime is 12616592179. The reversal of 12616592161 is 16129561621.

It is a happy number.

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 12616592161 - 2⁷ = 12616592033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12616592101) 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, 4945 + ... + 158926.

It is an arithmetic number, because the mean of its divisors is an integer number (3154208256).

Almost surely, 2^12616592161 is an apocalyptic number.

It is an amenable number.

12616592161 is a deficient number, since it is larger than the sum of its proper divisors (240863).

12616592161 is an equidigital number, since it uses as much as digits as its factorization.

12616592161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240862.

The product of its digits is 38880, while the sum is 40.

The spelling of 12616592161 in words is "twelve billion, six hundred sixteen million, five hundred ninety-two thousand, one hundred sixty-one".