161566505060179 has 2 divisors, whose sum is σ = 161566505060180. Its totient is φ = 161566505060178.

The previous prime is 161566505060159. The next prime is 161566505060183. The reversal of 161566505060179 is 971060505665161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161566505060179 - 2⁹ = 161566505059667 is a prime.

It is a super-2 number, since 2×161566505060179² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (161566505060119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80783252530089 + 80783252530090.

It is an arithmetic number, because the mean of its divisors is an integer number (80783252530090).

Almost surely, 2^{161566505060179} is an apocalyptic number.

161566505060179 is a deficient number, since it is larger than the sum of its proper divisors (1).

161566505060179 is an equidigital number, since it uses as much as digits as its factorization.

161566505060179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206000, while the sum is 58.

The spelling of 161566505060179 in words is "one hundred sixty-one trillion, five hundred sixty-six billion, five hundred five million, sixty thousand, one hundred seventy-nine".