168836441885911 has 2 divisors, whose sum is σ = 168836441885912. Its totient is φ = 168836441885910.

The previous prime is 168836441885879. The next prime is 168836441885929. The reversal of 168836441885911 is 119588144638861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168836441885911 - 2⁵ = 168836441885879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168836441885411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84418220942955 + 84418220942956.

It is an arithmetic number, because the mean of its divisors is an integer number (84418220942956).

Almost surely, 2^{168836441885911} is an apocalyptic number.

168836441885911 is a deficient number, since it is larger than the sum of its proper divisors (1).

168836441885911 is an equidigital number, since it uses as much as digits as its factorization.

168836441885911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 318504960, while the sum is 73.

The spelling of 168836441885911 in words is "one hundred sixty-eight trillion, eight hundred thirty-six billion, four hundred forty-one million, eight hundred eighty-five thousand, nine hundred eleven".