320056660423601 has 2 divisors, whose sum is σ = 320056660423602. Its totient is φ = 320056660423600.

The previous prime is 320056660423589. The next prime is 320056660423627. The reversal of 320056660423601 is 106324066650023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164062180872976 + 155994479550625 = 12808676^2 + 12489775^2 .

It is an emirp because it is prime and its reverse (106324066650023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320056660423601 is a prime.

It is not a weakly prime, because it can be changed into another prime (320056660423691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160028330211800 + 160028330211801.

It is an arithmetic number, because the mean of its divisors is an integer number (160028330211801).

Almost surely, 2^{320056660423601} is an apocalyptic number.

It is an amenable number.

320056660423601 is a deficient number, since it is larger than the sum of its proper divisors (1).

320056660423601 is an equidigital number, since it uses as much as digits as its factorization.

320056660423601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 320056660423601 in words is "three hundred twenty trillion, fifty-six billion, six hundred sixty million, four hundred twenty-three thousand, six hundred one".