12381860320 has 96 divisors (see below), whose sum is σ = 30294456192. Its totient is φ = 4779059712.

The previous prime is 12381860303. The next prime is 12381860369. The reversal of 12381860320 is 2306818321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560199 + ... + 581881.

It is an arithmetic number, because the mean of its divisors is an integer number (315567252).

Almost surely, 2^12381860320 is an apocalyptic number.

12381860320 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 12381860320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15147228096).

12381860320 is an abundant number, since it is smaller than the sum of its proper divisors (17912595872).

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

12381860320 is a wasteful number, since it uses less digits than its factorization.

12381860320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21824 (or 21816 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 12381860320 in words is "twelve billion, three hundred eighty-one million, eight hundred sixty thousand, three hundred twenty".