12315566123161 has 16 divisors (see below), whose sum is σ = 14332396117248. Its totient is φ = 10364335833600.

The previous prime is 12315566123083. The next prime is 12315566123227. The reversal of 12315566123161 is 16132166551321.

12315566123161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12315566123161 - 2⁷ = 12315566123033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12315561123161) 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, 51290620 + ... + 51530173.

It is an arithmetic number, because the mean of its divisors is an integer number (895774757328).

Almost surely, 2^{12315566123161} is an apocalyptic number.

It is an amenable number.

12315566123161 is a deficient number, since it is larger than the sum of its proper divisors (2016829994087).

12315566123161 is a wasteful number, since it uses less digits than its factorization.

12315566123161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102821112.

The product of its digits is 194400, while the sum is 43.

The spelling of 12315566123161 in words is "twelve trillion, three hundred fifteen billion, five hundred sixty-six million, one hundred twenty-three thousand, one hundred sixty-one".