12644015300200 has 48 divisors (see below), whose sum is σ = 29421571368780. Its totient is φ = 5053436520960.

The previous prime is 12644015300129. The next prime is 12644015300201. The reversal of 12644015300200 is 200351044621.

It can be written as a sum of positive squares in 6 ways, for example, as 192192806404 + 12451822493796 = 438398^2 + 3528714^2 .

It is a super-2 number, since 2×12644015300200² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12644015300201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25816789 + ... + 26301988.

Almost surely, 2^{12644015300200} is an apocalyptic number.

12644015300200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12644015300200 is an abundant number, since it is smaller than the sum of its proper divisors (16777556068580).

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

12644015300200 is a wasteful number, since it uses less digits than its factorization.

12644015300200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52120006 (or 52119997 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 12644015300200 its reverse (200351044621), we get a palindrome (12844366344821).

The spelling of 12644015300200 in words is "twelve trillion, six hundred forty-four billion, fifteen million, three hundred thousand, two hundred".