12643680200 has 36 divisors (see below), whose sum is σ = 29400254145. Its totient is φ = 5056836000.

The previous prime is 12643680197. The next prime is 12643680209. The reversal of 12643680200 is 208634621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 12390806596 + 252873604 = 111314^2 + 15902^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79510.

It is not an unprimeable number, because it can be changed into a prime (12643680209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1586225 + ... + 1594175.

Almost surely, 2^12643680200 is an apocalyptic number.

12643680200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12643680200 is an abundant number, since it is smaller than the sum of its proper divisors (16756573945).

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

12643680200 is an frugal number, since it uses more digits than its factorization.

12643680200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15918 (or 7958 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Multiplying 12643680200 by its sum of digits (32), we get a square (404597766400 = 636080²).

The spelling of 12643680200 in words is "twelve billion, six hundred forty-three million, six hundred eighty thousand, two hundred".