13320320320 has 28 divisors (see below), whose sum is σ = 31719013524. Its totient is φ = 5328128000.

The previous prime is 13320320297. The next prime is 13320320341. The reversal of 13320320320 is 2302302331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1955054656 + 11365265664 = 44216^2 + 106608^2 .

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, 20812681 + ... + 20813320.

Almost surely, 2^13320320320 is an apocalyptic number.

13320320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13320320320 is an abundant number, since it is smaller than the sum of its proper divisors (18398693204).

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

13320320320 is an equidigital number, since it uses as much as digits as its factorization.

13320320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41626018 (or 41626008 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 13320320320 its reverse (2302302331), we get a palindrome (15622622651).

The spelling of 13320320320 in words is "thirteen billion, three hundred twenty million, three hundred twenty thousand, three hundred twenty".