13321443444320 has 72 divisors (see below), whose sum is σ = 34593091358112. Its totient is φ = 4844161245440.

The previous prime is 13321443444191. The next prime is 13321443444389. The reversal of 13321443444320 is 2344434412331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 344026184 + ... + 344064903.

It is an arithmetic number, because the mean of its divisors is an integer number (480459602196).

Almost surely, 2^{13321443444320} is an apocalyptic number.

13321443444320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321443444320 is an abundant number, since it is smaller than the sum of its proper divisors (21271647913792).

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

13321443444320 is a wasteful number, since it uses less digits than its factorization.

13321443444320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688091124 (or 688091105 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 13321443444320 its reverse (2344434412331), we get a palindrome (15665877856651).

It can be divided in two parts, 133214 and 43444320, that added together give a palindrome (43577534).

The spelling of 13321443444320 in words is "thirteen trillion, three hundred twenty-one billion, four hundred forty-three million, four hundred forty-four thousand, three hundred twenty".