168717427213 has 2 divisors, whose sum is σ = 168717427214. Its totient is φ = 168717427212.

The previous prime is 168717427189. The next prime is 168717427217. The reversal of 168717427213 is 312724717861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107884657764 + 60832769449 = 328458^2 + 246643^2 .

It is a cyclic number.

It is not a de Polignac number, because 168717427213 - 2³⁷ = 31278473741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168717427217) 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, 84358713606 + 84358713607.

It is an arithmetic number, because the mean of its divisors is an integer number (84358713607).

Almost surely, 2^168717427213 is an apocalyptic number.

It is an amenable number.

168717427213 is a deficient number, since it is larger than the sum of its proper divisors (1).

168717427213 is an equidigital number, since it uses as much as digits as its factorization.

168717427213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 49.

The spelling of 168717427213 in words is "one hundred sixty-eight billion, seven hundred seventeen million, four hundred twenty-seven thousand, two hundred thirteen".