13500111328 has 144 divisors (see below), whose sum is σ = 30132626832. Its totient is φ = 5945702400.

The previous prime is 13500111307. The next prime is 13500111329. The reversal of 13500111328 is 82311100531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13500111329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43974151 + ... + 43974457.

It is an arithmetic number, because the mean of its divisors is an integer number (209254353).

Almost surely, 2^13500111328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13500111328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15066313416).

13500111328 is an abundant number, since it is smaller than the sum of its proper divisors (16632515504).

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

13500111328 is a wasteful number, since it uses less digits than its factorization.

13500111328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 13500111328 its reverse (82311100531), we get a palindrome (95811211859).

The spelling of 13500111328 in words is "thirteen billion, five hundred million, one hundred eleven thousand, three hundred twenty-eight".