13320055320 has 256 divisors, whose sum is σ = 48988800000. Its totient is φ = 2851031040.

The previous prime is 13320055267. The next prime is 13320055321. The reversal of 13320055320 is 2355002331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320055321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 377806 + ... + 411554.

It is an arithmetic number, because the mean of its divisors is an integer number (191362500).

Almost surely, 2^13320055320 is an apocalyptic number.

13320055320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13320055320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24494400000).

13320055320 is an abundant number, since it is smaller than the sum of its proper divisors (35668744680).

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

13320055320 is a wasteful number, since it uses less digits than its factorization.

13320055320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33810 (or 33806 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 13320055320 its reverse (2355002331), we get a palindrome (15675057651).

The spelling of 13320055320 in words is "thirteen billion, three hundred twenty million, fifty-five thousand, three hundred twenty".