15131663161 has 16 divisors (see below), whose sum is σ = 16250549184. Its totient is φ = 14038424064.

The previous prime is 15131663089. The next prime is 15131663201. The reversal of 15131663161 is 16136613151.

It is a cyclic number.

It is not a de Polignac number, because 15131663161 - 2⁷ = 15131663033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15131663461) 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, 4151806 + ... + 4155448.

It is an arithmetic number, because the mean of its divisors is an integer number (1015659324).

Almost surely, 2^15131663161 is an apocalyptic number.

It is an amenable number.

15131663161 is a deficient number, since it is larger than the sum of its proper divisors (1118886023).

15131663161 is a wasteful number, since it uses less digits than its factorization.

15131663161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080.

The product of its digits is 9720, while the sum is 34.

The spelling of 15131663161 in words is "fifteen billion, one hundred thirty-one million, six hundred sixty-three thousand, one hundred sixty-one".