168758422601 has 2 divisors, whose sum is σ = 168758422602. Its totient is φ = 168758422600.

The previous prime is 168758422589. The next prime is 168758422627. The reversal of 168758422601 is 106224857861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114247380025 + 54511042576 = 338005^2 + 233476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168758422601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168758422601.

It is not a weakly prime, because it can be changed into another prime (168758422631) 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, 84379211300 + 84379211301.

It is an arithmetic number, because the mean of its divisors is an integer number (84379211301).

Almost surely, 2^168758422601 is an apocalyptic number.

It is an amenable number.

168758422601 is a deficient number, since it is larger than the sum of its proper divisors (1).

168758422601 is an equidigital number, since it uses as much as digits as its factorization.

168758422601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 168758422601 in words is "one hundred sixty-eight billion, seven hundred fifty-eight million, four hundred twenty-two thousand, six hundred one".