168057108191213 has 2 divisors, whose sum is σ = 168057108191214. Its totient is φ = 168057108191212.

The previous prime is 168057108191173. The next prime is 168057108191267. The reversal of 168057108191213 is 312191801750861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151486322448484 + 16570785742729 = 12307978^2 + 4070723^2 .

It is a cyclic number.

It is not a de Polignac number, because 168057108191213 - 2³⁰ = 168056034449389 is a prime.

It is a super-2 number, since 2×168057108191213² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168057108199213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84028554095606 + 84028554095607.

It is an arithmetic number, because the mean of its divisors is an integer number (84028554095607).

Almost surely, 2^{168057108191213} is an apocalyptic number.

It is an amenable number.

168057108191213 is a deficient number, since it is larger than the sum of its proper divisors (1).

168057108191213 is an equidigital number, since it uses as much as digits as its factorization.

168057108191213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 53.

The spelling of 168057108191213 in words is "one hundred sixty-eight trillion, fifty-seven billion, one hundred eight million, one hundred ninety-one thousand, two hundred thirteen".