320546746573 has 2 divisors, whose sum is σ = 320546746574. Its totient is φ = 320546746572.

The previous prime is 320546746567. The next prime is 320546746589. The reversal of 320546746573 is 375647645023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300142909609 + 20403836964 = 547853^2 + 142842^2 .

It is a cyclic number.

It is not a de Polignac number, because 320546746573 - 2⁹ = 320546746061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320546746573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320546746073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160273373286 + 160273373287.

It is an arithmetic number, because the mean of its divisors is an integer number (160273373287).

Almost surely, 2^320546746573 is an apocalyptic number.

It is an amenable number.

320546746573 is a deficient number, since it is larger than the sum of its proper divisors (1).

320546746573 is an equidigital number, since it uses as much as digits as its factorization.

320546746573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12700800, while the sum is 52.

The spelling of 320546746573 in words is "three hundred twenty billion, five hundred forty-six million, seven hundred forty-six thousand, five hundred seventy-three".