320344421144 has 32 divisors (see below), whose sum is σ = 655850744640. Its totient is φ = 145477591200.

The previous prime is 320344421123. The next prime is 320344421171. The reversal of 320344421144 is 441124443023.

It is a self number, because there is not a number n which added to its sum of digits gives 320344421144.

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, 1572314 + ... + 1764329.

It is an arithmetic number, because the mean of its divisors is an integer number (20495335770).

Almost surely, 2^320344421144 is an apocalyptic number.

It is an amenable number.

320344421144 is an abundant number, since it is smaller than the sum of its proper divisors (335506323496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320344421144 is a wasteful number, since it uses less digits than its factorization.

320344421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337751 (or 3337747 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 320344421144 its reverse (441124443023), we get a palindrome (761468864167).

The spelling of 320344421144 in words is "three hundred twenty billion, three hundred forty-four million, four hundred twenty-one thousand, one hundred forty-four".