13231299968 has 64 divisors (see below), whose sum is σ = 27245358720. Its totient is φ = 6393815040.

The previous prime is 13231299959. The next prime is 13231299989. The reversal of 13231299968 is 86999213231.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3875030 + ... + 3878442.

It is an arithmetic number, because the mean of its divisors is an integer number (425708730).

Almost surely, 2^13231299968 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 13231299968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13622679360).

13231299968 is an abundant number, since it is smaller than the sum of its proper divisors (14014058752).

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

13231299968 is an equidigital number, since it uses as much as digits as its factorization.

13231299968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435 (or 4423 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 53.

The spelling of 13231299968 in words is "thirteen billion, two hundred thirty-one million, two hundred ninety-nine thousand, nine hundred sixty-eight".