13020320320 has 112 divisors (see below), whose sum is σ = 35759623680. Its totient is φ = 4423071744.

The previous prime is 13020320297. The next prime is 13020320329. The reversal of 13020320320 is 2302302031.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 13020320294 and 13020320303.

It is not an unprimeable number, because it can be changed into a prime (13020320329) 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, 217497 + ... + 270823.

Almost surely, 2^13020320320 is an apocalyptic number.

13020320320 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 13020320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17879811840).

13020320320 is an abundant number, since it is smaller than the sum of its proper divisors (22739303360).

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

13020320320 is a wasteful number, since it uses less digits than its factorization.

13020320320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53460 (or 53450 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 13020320320 its reverse (2302302031), we get a palindrome (15322622351).

The spelling of 13020320320 in words is "thirteen billion, twenty million, three hundred twenty thousand, three hundred twenty".