13020020320 has 96 divisors (see below), whose sum is σ = 32133604608. Its totient is φ = 4975922688.

The previous prime is 13020020281. The next prime is 13020020357. The reversal of 13020020320 is 2302002031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13020020320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4808407 + ... + 4811113.

It is an arithmetic number, because the mean of its divisors is an integer number (334725048).

Almost surely, 2^13020020320 is an apocalyptic number.

13020020320 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 13020020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16066802304).

13020020320 is an abundant number, since it is smaller than the sum of its proper divisors (19113584288).

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

13020020320 is a wasteful number, since it uses less digits than its factorization.

13020020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052 (or 4044 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 13020020320 its reverse (2302002031), we get a palindrome (15322022351).

The spelling of 13020020320 in words is "thirteen billion, twenty million, twenty thousand, three hundred twenty".