13500320120 has 128 divisors (see below), whose sum is σ = 37474099200. Its totient is φ = 4274704896.

The previous prime is 13500320117. The next prime is 13500320123. The reversal of 13500320120 is 2102300531.

It is an interprime number because it is at equal distance from previous prime (13500320117) and next prime (13500320123).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500320123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150617 + ... + 222903.

It is an arithmetic number, because the mean of its divisors is an integer number (292766400).

Almost surely, 2^13500320120 is an apocalyptic number.

13500320120 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 13500320120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18737049600).

13500320120 is an abundant number, since it is smaller than the sum of its proper divisors (23973779080).

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

13500320120 is a wasteful number, since it uses less digits than its factorization.

13500320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72357 (or 72353 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 13500320120 its reverse (2102300531), we get a palindrome (15602620651).

The spelling of 13500320120 in words is "thirteen billion, five hundred million, three hundred twenty thousand, one hundred twenty".