320568708893 has 2 divisors, whose sum is σ = 320568708894. Its totient is φ = 320568708892.

The previous prime is 320568708881. The next prime is 320568708899. The reversal of 320568708893 is 398807865023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273626286649 + 46942422244 = 523093^2 + 216662^2 .

It is a cyclic number.

It is not a de Polignac number, because 320568708893 - 2⁶ = 320568708829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320568708899) 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, 160284354446 + 160284354447.

It is an arithmetic number, because the mean of its divisors is an integer number (160284354447).

Almost surely, 2^320568708893 is an apocalyptic number.

It is an amenable number.

320568708893 is a deficient number, since it is larger than the sum of its proper divisors (1).

320568708893 is an equidigital number, since it uses as much as digits as its factorization.

320568708893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 320568708893 in words is "three hundred twenty billion, five hundred sixty-eight million, seven hundred eight thousand, eight hundred ninety-three".