13331444320 has 24 divisors (see below), whose sum is σ = 31495537584. Its totient is φ = 5332577664.

The previous prime is 13331444317. The next prime is 13331444341. The reversal of 13331444320 is 2344413331.

It is a congruent number.

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, 41660604 + ... + 41660923.

It is an arithmetic number, because the mean of its divisors is an integer number (1312314066).

Almost surely, 2^13331444320 is an apocalyptic number.

13331444320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13331444320 is an abundant number, since it is smaller than the sum of its proper divisors (18164093264).

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

13331444320 is an equidigital number, since it uses as much as digits as its factorization.

13331444320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83321542 (or 83321534 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 13331444320 its reverse (2344413331), we get a palindrome (15675857651).

The spelling of 13331444320 in words is "thirteen billion, three hundred thirty-one million, four hundred forty-four thousand, three hundred twenty".