320464407793 has 2 divisors, whose sum is σ = 320464407794. Its totient is φ = 320464407792.

The previous prime is 320464407773. The next prime is 320464407799. The reversal of 320464407793 is 397704464023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290330225329 + 30134182464 = 538823^2 + 173592^2 .

It is an emirp because it is prime and its reverse (397704464023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320464407793 - 2⁹ = 320464407281 is a prime.

It is not a weakly prime, because it can be changed into another prime (320464407799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160232203896 + 160232203897.

It is an arithmetic number, because the mean of its divisors is an integer number (160232203897).

Almost surely, 2^320464407793 is an apocalyptic number.

It is an amenable number.

320464407793 is a deficient number, since it is larger than the sum of its proper divisors (1).

320464407793 is an equidigital number, since it uses as much as digits as its factorization.

320464407793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 320464407793 in words is "three hundred twenty billion, four hundred sixty-four million, four hundred seven thousand, seven hundred ninety-three".