36431613161 has 2 divisors, whose sum is σ = 36431613162. Its totient is φ = 36431613160.

The previous prime is 36431613157. The next prime is 36431613191. The reversal of 36431613161 is 16131613463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35135253136 + 1296360025 = 187444^2 + 36005^2 .

It is a cyclic number.

It is not a de Polignac number, because 36431613161 - 2² = 36431613157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36431613151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18215806580 + 18215806581.

It is an arithmetic number, because the mean of its divisors is an integer number (18215806581).

Almost surely, 2^36431613161 is an apocalyptic number.

It is an amenable number.

36431613161 is a deficient number, since it is larger than the sum of its proper divisors (1).

36431613161 is an equidigital number, since it uses as much as digits as its factorization.

36431613161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The spelling of 36431613161 in words is "thirty-six billion, four hundred thirty-one million, six hundred thirteen thousand, one hundred sixty-one".