168311606833 has 2 divisors, whose sum is σ = 168311606834. Its totient is φ = 168311606832.

The previous prime is 168311606783. The next prime is 168311606843. The reversal of 168311606833 is 338606113861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160198461504 + 8113145329 = 400248^2 + 90073^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168311606833 is a prime.

It is not a weakly prime, because it can be changed into another prime (168311606843) 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, 84155803416 + 84155803417.

It is an arithmetic number, because the mean of its divisors is an integer number (84155803417).

Almost surely, 2^168311606833 is an apocalyptic number.

It is an amenable number.

168311606833 is a deficient number, since it is larger than the sum of its proper divisors (1).

168311606833 is an equidigital number, since it uses as much as digits as its factorization.

168311606833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 168311606833 in words is "one hundred sixty-eight billion, three hundred eleven million, six hundred six thousand, eight hundred thirty-three".