168356864773 has 2 divisors, whose sum is σ = 168356864774. Its totient is φ = 168356864772.

The previous prime is 168356864759. The next prime is 168356864821. The reversal of 168356864773 is 377468653861.

168356864773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143775955684 + 24580909089 = 379178^2 + 156783^2 .

It is a cyclic number.

It is not a de Polignac number, because 168356864773 - 2⁹ = 168356864261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168356865773) 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, 84178432386 + 84178432387.

It is an arithmetic number, because the mean of its divisors is an integer number (84178432387).

Almost surely, 2^168356864773 is an apocalyptic number.

It is an amenable number.

168356864773 is a deficient number, since it is larger than the sum of its proper divisors (1).

168356864773 is an equidigital number, since it uses as much as digits as its factorization.

168356864773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 64.

The spelling of 168356864773 in words is "one hundred sixty-eight billion, three hundred fifty-six million, eight hundred sixty-four thousand, seven hundred seventy-three".