320256782713 has 16 divisors (see below), whose sum is σ = 370797229440. Its totient is φ = 270924990336.

The previous prime is 320256782711. The next prime is 320256782719. The reversal of 320256782713 is 317287652023.

It is not a de Polignac number, because 320256782713 - 2¹ = 320256782711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320256782711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129106 + ... + 810667.

It is an arithmetic number, because the mean of its divisors is an integer number (23174826840).

Almost surely, 2^320256782713 is an apocalyptic number.

It is an amenable number.

320256782713 is a deficient number, since it is larger than the sum of its proper divisors (50540446727).

320256782713 is an equidigital number, since it uses as much as digits as its factorization.

320256782713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940416.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 320256782713 in words is "three hundred twenty billion, two hundred fifty-six million, seven hundred eighty-two thousand, seven hundred thirteen".