12856320000 has 700 divisors, whose sum is σ = 49542716256. Its totient is φ = 3317760000.

The previous prime is 12856319947. The next prime is 12856320007. The reversal of 12856320000 is 2365821.

12856320000 is a `hidden beast` number, since 1 + 28 + 5 + 632 + 0 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856320007) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 414719985 + ... + 414720015.

Almost surely, 2^12856320000 is an apocalyptic number.

12856320000 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 12856320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24771358128).

12856320000 is an abundant number, since it is smaller than the sum of its proper divisors (36686396256).

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

12856320000 is an frugal number, since it uses more digits than its factorization.

12856320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 12856320000 its reverse (2365821), we get a palindrome (12858685821).

The spelling of 12856320000 in words is "twelve billion, eight hundred fifty-six million, three hundred twenty thousand".