320788775399 has 2 divisors, whose sum is σ = 320788775400. Its totient is φ = 320788775398.

The previous prime is 320788775381. The next prime is 320788775429. The reversal of 320788775399 is 993577887023.

It is a weak prime.

It is an emirp because it is prime and its reverse (993577887023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320788775399 - 2²⁸ = 320520339943 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320788775309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160394387699 + 160394387700.

It is an arithmetic number, because the mean of its divisors is an integer number (160394387700).

Almost surely, 2^320788775399 is an apocalyptic number.

320788775399 is a deficient number, since it is larger than the sum of its proper divisors (1).

320788775399 is an equidigital number, since it uses as much as digits as its factorization.

320788775399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160030080, while the sum is 68.

The spelling of 320788775399 in words is "three hundred twenty billion, seven hundred eighty-eight million, seven hundred seventy-five thousand, three hundred ninety-nine".