165565747565167 has 2 divisors, whose sum is σ = 165565747565168. Its totient is φ = 165565747565166.

The previous prime is 165565747565161. The next prime is 165565747565203. The reversal of 165565747565167 is 761565747565561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165565747565167 - 2⁷ = 165565747565039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165565747565093 and 165565747565102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165565747565161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82782873782583 + 82782873782584.

It is an arithmetic number, because the mean of its divisors is an integer number (82782873782584).

Almost surely, 2^{165565747565167} is an apocalyptic number.

165565747565167 is a deficient number, since it is larger than the sum of its proper divisors (1).

165565747565167 is an equidigital number, since it uses as much as digits as its factorization.

165565747565167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5556600000, while the sum is 76.

The spelling of 165565747565167 in words is "one hundred sixty-five trillion, five hundred sixty-five billion, seven hundred forty-seven million, five hundred sixty-five thousand, one hundred sixty-seven".