12656448000 has 960 divisors, whose sum is σ = 54040326912. Its totient is φ = 2786918400.

The previous prime is 12656447983. The next prime is 12656448029. The reversal of 12656448000 is 84465621.

12656448000 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 644 + 8 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173375964 + ... + 173376036.

Almost surely, 2^12656448000 is an apocalyptic number.

12656448000 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 12656448000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27020163456).

12656448000 is an abundant number, since it is smaller than the sum of its proper divisors (41383878912).

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

12656448000 is an equidigital number, since it uses as much as digits as its factorization.

12656448000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 12656448000 in words is "twelve billion, six hundred fifty-six million, four hundred forty-eight thousand".