320320221344 has 24 divisors (see below), whose sum is σ = 630706965588. Its totient is φ = 160140674560.

The previous prime is 320320221313. The next prime is 320320221383. The reversal of 320320221344 is 443122023023.

It can be written as a sum of positive squares in 2 ways, for example, as 280794010000 + 39526211344 = 529900^2 + 198812^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337727 + ... + 868734.

Almost surely, 2^320320221344 is an apocalyptic number.

It is an amenable number.

320320221344 is a deficient number, since it is larger than the sum of its proper divisors (310386744244).

320320221344 is a wasteful number, since it uses less digits than its factorization.

320320221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214768 (or 1214760 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 320320221344 its reverse (443122023023), we get a palindrome (763442244367).

The spelling of 320320221344 in words is "three hundred twenty billion, three hundred twenty million, two hundred twenty-one thousand, three hundred forty-four".