168993341269 has 2 divisors, whose sum is σ = 168993341270. Its totient is φ = 168993341268.

The previous prime is 168993341249. The next prime is 168993341357. The reversal of 168993341269 is 962143399861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142963391025 + 26029950244 = 378105^2 + 161338^2 .

It is a cyclic number.

It is not a de Polignac number, because 168993341269 - 2⁹ = 168993340757 is a prime.

It is a super-2 number, since 2×168993341269² (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 (168993341249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84496670634 + 84496670635.

It is an arithmetic number, because the mean of its divisors is an integer number (84496670635).

Almost surely, 2^168993341269 is an apocalyptic number.

It is an amenable number.

168993341269 is a deficient number, since it is larger than the sum of its proper divisors (1).

168993341269 is an equidigital number, since it uses as much as digits as its factorization.

168993341269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 61.

The spelling of 168993341269 in words is "one hundred sixty-eight billion, nine hundred ninety-three million, three hundred forty-one thousand, two hundred sixty-nine".