12320000000 has 384 divisors, whose sum is σ = 38390526720. Its totient is φ = 3840000000.

The previous prime is 12319999997. The next prime is 12320000041. The reversal of 12320000000 is 2321.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1119999995 + ... + 1120000005.

It is an arithmetic number, because the mean of its divisors is an integer number (99975330).

Almost surely, 2^12320000000 is an apocalyptic number.

12320000000 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 12320000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19195263360).

12320000000 is an abundant number, since it is smaller than the sum of its proper divisors (26070526720).

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

12320000000 is an frugal number, since it uses more digits than its factorization.

12320000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

Adding to 12320000000 its reverse (2321), we get a palindrome (12320002321).

The spelling of 12320000000 in words is "twelve billion, three hundred twenty million", and thus it is an aban number.