168511265983 has 2 divisors, whose sum is σ = 168511265984. Its totient is φ = 168511265982.

The previous prime is 168511265969. The next prime is 168511266043. The reversal of 168511265983 is 389562115861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168511265983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168511266983) 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, 84255632991 + 84255632992.

It is an arithmetic number, because the mean of its divisors is an integer number (84255632992).

Almost surely, 2^168511265983 is an apocalyptic number.

168511265983 is a deficient number, since it is larger than the sum of its proper divisors (1).

168511265983 is an equidigital number, since it uses as much as digits as its factorization.

168511265983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3110400, while the sum is 55.

The spelling of 168511265983 in words is "one hundred sixty-eight billion, five hundred eleven million, two hundred sixty-five thousand, nine hundred eighty-three".