161115050666137 has 2 divisors, whose sum is σ = 161115050666138. Its totient is φ = 161115050666136.

The previous prime is 161115050666069. The next prime is 161115050666159. The reversal of 161115050666137 is 731666050511161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112033312607241 + 49081738058896 = 10584579^2 + 7005836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161115050666137 is a prime.

It is not a weakly prime, because it can be changed into another prime (161115050666177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80557525333068 + 80557525333069.

It is an arithmetic number, because the mean of its divisors is an integer number (80557525333069).

Almost surely, 2^{161115050666137} is an apocalyptic number.

It is an amenable number.

161115050666137 is a deficient number, since it is larger than the sum of its proper divisors (1).

161115050666137 is an equidigital number, since it uses as much as digits as its factorization.

161115050666137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 49.

The spelling of 161115050666137 in words is "one hundred sixty-one trillion, one hundred fifteen billion, fifty million, six hundred sixty-six thousand, one hundred thirty-seven".