165017327055709 has 2 divisors, whose sum is σ = 165017327055710. Its totient is φ = 165017327055708.

The previous prime is 165017327055667. The next prime is 165017327055797. The reversal of 165017327055709 is 907550723710561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129583844580100 + 35433482475609 = 11383490^2 + 5952603^2 .

It is a cyclic number.

It is not a de Polignac number, because 165017327055709 - 2⁹ = 165017327055197 is a prime.

It is a super-4 number, since 4×165017327055709⁴ (a number of 58 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165017327055809) 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, 82508663527854 + 82508663527855.

It is an arithmetic number, because the mean of its divisors is an integer number (82508663527855).

Almost surely, 2^{165017327055709} is an apocalyptic number.

It is an amenable number.

165017327055709 is a deficient number, since it is larger than the sum of its proper divisors (1).

165017327055709 is an equidigital number, since it uses as much as digits as its factorization.

165017327055709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13891500, while the sum is 58.

The spelling of 165017327055709 in words is "one hundred sixty-five trillion, seventeen billion, three hundred twenty-seven million, fifty-five thousand, seven hundred nine".