171264817169 has 2 divisors, whose sum is σ = 171264817170. Its totient is φ = 171264817168.

The previous prime is 171264817123. The next prime is 171264817181. The reversal of 171264817169 is 961718462171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171143553025 + 121264144 = 413695^2 + 11012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171264817169 is a prime.

It is a super-2 number, since 2×171264817169² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 171264817169.

It is not a weakly prime, because it can be changed into another prime (171264817189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85632408584 + 85632408585.

It is an arithmetic number, because the mean of its divisors is an integer number (85632408585).

Almost surely, 2^171264817169 is an apocalyptic number.

It is an amenable number.

171264817169 is a deficient number, since it is larger than the sum of its proper divisors (1).

171264817169 is an equidigital number, since it uses as much as digits as its factorization.

171264817169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 53.

The spelling of 171264817169 in words is "one hundred seventy-one billion, two hundred sixty-four million, eight hundred seventeen thousand, one hundred sixty-nine".