320445663685 has 8 divisors (see below), whose sum is σ = 439468338816. Its totient is φ = 219734169360.

The previous prime is 320445663679. The next prime is 320445663757. The reversal of 320445663685 is 586366544023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-320445663685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4577795161 + ... + 4577795230.

It is an arithmetic number, because the mean of its divisors is an integer number (54933542352).

Almost surely, 2^320445663685 is an apocalyptic number.

320445663685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

320445663685 is a deficient number, since it is larger than the sum of its proper divisors (119022675131).

320445663685 is an equidigital number, since it uses as much as digits as its factorization.

320445663685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9155590403.

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 320445663685 in words is "three hundred twenty billion, four hundred forty-five million, six hundred sixty-three thousand, six hundred eighty-five".