168986986933 has 2 divisors, whose sum is σ = 168986986934. Its totient is φ = 168986986932.

The previous prime is 168986986871. The next prime is 168986986939. The reversal of 168986986933 is 339689689861.

168986986933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106969551844 + 62017435089 = 327062^2 + 249033^2 .

It is a cyclic number.

It is not a de Polignac number, because 168986986933 - 2³³ = 160397052341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168986986933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168986986939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84493493466 + 84493493467.

It is an arithmetic number, because the mean of its divisors is an integer number (84493493467).

Almost surely, 2^168986986933 is an apocalyptic number.

It is an amenable number.

168986986933 is a deficient number, since it is larger than the sum of its proper divisors (1).

168986986933 is an equidigital number, since it uses as much as digits as its factorization.

168986986933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725594112, while the sum is 76.

The spelling of 168986986933 in words is "one hundred sixty-eight billion, nine hundred eighty-six million, nine hundred eighty-six thousand, nine hundred thirty-three".