168252522517 has 2 divisors, whose sum is σ = 168252522518. Its totient is φ = 168252522516.

The previous prime is 168252522497. The next prime is 168252522533. The reversal of 168252522517 is 715225252861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138046430116 + 30206092401 = 371546^2 + 173799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168252522517 is a prime.

It is a super-2 number, since 2×168252522517² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168252532517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84126261258 + 84126261259.

It is an arithmetic number, because the mean of its divisors is an integer number (84126261259).

Almost surely, 2^168252522517 is an apocalyptic number.

It is an amenable number.

168252522517 is a deficient number, since it is larger than the sum of its proper divisors (1).

168252522517 is an equidigital number, since it uses as much as digits as its factorization.

168252522517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672000, while the sum is 46.

The spelling of 168252522517 in words is "one hundred sixty-eight billion, two hundred fifty-two million, five hundred twenty-two thousand, five hundred seventeen".