45117239161 has 2 divisors, whose sum is σ = 45117239162. Its totient is φ = 45117239160.

The previous prime is 45117239149. The next prime is 45117239177. The reversal of 45117239161 is 16193271154.

45117239161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28042851600 + 17074387561 = 167460^2 + 130669^2 .

It is a cyclic number.

It is not a de Polignac number, because 45117239161 - 2⁵ = 45117239129 is a prime.

It is not a weakly prime, because it can be changed into another prime (45117230161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22558619580 + 22558619581.

It is an arithmetic number, because the mean of its divisors is an integer number (22558619581).

Almost surely, 2^45117239161 is an apocalyptic number.

It is an amenable number.

45117239161 is a deficient number, since it is larger than the sum of its proper divisors (1).

45117239161 is an equidigital number, since it uses as much as digits as its factorization.

45117239161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The spelling of 45117239161 in words is "forty-five billion, one hundred seventeen million, two hundred thirty-nine thousand, one hundred sixty-one".