320078297593 has 2 divisors, whose sum is σ = 320078297594. Its totient is φ = 320078297592.

The previous prime is 320078297579. The next prime is 320078297597. The reversal of 320078297593 is 395792870023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297490612329 + 22587685264 = 545427^2 + 150292^2 .

It is a cyclic number.

It is not a de Polignac number, because 320078297593 - 2⁹ = 320078297081 is a prime.

It is not a weakly prime, because it can be changed into another prime (320078297597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160039148796 + 160039148797.

It is an arithmetic number, because the mean of its divisors is an integer number (160039148797).

Almost surely, 2^320078297593 is an apocalyptic number.

It is an amenable number.

320078297593 is a deficient number, since it is larger than the sum of its proper divisors (1).

320078297593 is an equidigital number, since it uses as much as digits as its factorization.

320078297593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 320078297593 in words is "three hundred twenty billion, seventy-eight million, two hundred ninety-seven thousand, five hundred ninety-three".