165017327055797 has 2 divisors, whose sum is σ = 165017327055798. Its totient is φ = 165017327055796.

The previous prime is 165017327055709. The next prime is 165017327055809. The reversal of 165017327055797 is 797550723710561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154754620081681 + 10262706974116 = 12440041^2 + 3203546^2 .

It is a cyclic number.

It is not a de Polignac number, because 165017327055797 - 2¹⁴ = 165017327039413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165017327055197) 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, 82508663527898 + 82508663527899.

It is an arithmetic number, because the mean of its divisors is an integer number (82508663527899).

Almost surely, 2^{165017327055797} is an apocalyptic number.

It is an amenable number.

165017327055797 is a deficient number, since it is larger than the sum of its proper divisors (1).

165017327055797 is an equidigital number, since it uses as much as digits as its factorization.

165017327055797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97240500, while the sum is 65.

The spelling of 165017327055797 in words is "one hundred sixty-five trillion, seventeen billion, three hundred twenty-seven million, fifty-five thousand, seven hundred ninety-seven".