13815323312 has 80 divisors (see below), whose sum is σ = 30882642432. Its totient is φ = 5864624640.

The previous prime is 13815323299. The next prime is 13815323317. The reversal of 13815323312 is 21332351831.

It is not an unprimeable number, because it can be changed into a prime (13815323317) 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, 10602053 + ... + 10603355.

Almost surely, 2^13815323312 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 13815323312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15441321216).

13815323312 is an abundant number, since it is smaller than the sum of its proper divisors (17067319120).

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

13815323312 is a wasteful number, since it uses less digits than its factorization.

13815323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2140 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The spelling of 13815323312 in words is "thirteen billion, eight hundred fifteen million, three hundred twenty-three thousand, three hundred twelve".