320056660407949 has 2 divisors, whose sum is σ = 320056660407950. Its totient is φ = 320056660407948.

The previous prime is 320056660407907. The next prime is 320056660407977. The reversal of 320056660407949 is 949704066650023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310774236864100 + 9282423543849 = 17628790^2 + 3046707^2 .

It is a cyclic number.

It is not a de Polignac number, because 320056660407949 - 2²⁷ = 320056526190221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320056660405949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160028330203974 + 160028330203975.

It is an arithmetic number, because the mean of its divisors is an integer number (160028330203975).

Almost surely, 2^{320056660407949} is an apocalyptic number.

It is an amenable number.

320056660407949 is a deficient number, since it is larger than the sum of its proper divisors (1).

320056660407949 is an equidigital number, since it uses as much as digits as its factorization.

320056660407949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 61.

The spelling of 320056660407949 in words is "three hundred twenty trillion, fifty-six billion, six hundred sixty million, four hundred seven thousand, nine hundred forty-nine".