13333320320 has 128 divisors (see below), whose sum is σ = 34323652800. Its totient is φ = 4934287360.

The previous prime is 13333320307. The next prime is 13333320323. The reversal of 13333320320 is 2302333331.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (13333320323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631535 + ... + 652305.

Almost surely, 2^13333320320 is an apocalyptic number.

13333320320 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 13333320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17161826400).

13333320320 is an abundant number, since it is smaller than the sum of its proper divisors (20990332480).

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

13333320320 is a wasteful number, since it uses less digits than its factorization.

13333320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20866 (or 20854 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 13333320320 its reverse (2302333331), we get a palindrome (15635653651).

The spelling of 13333320320 in words is "thirteen billion, three hundred thirty-three million, three hundred twenty thousand, three hundred twenty".