12644211696 has 40 divisors (see below), whose sum is σ = 33280526160. Its totient is φ = 4135213056.

The previous prime is 12644211691. The next prime is 12644211733. The reversal of 12644211696 is 69611244621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644211691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482561 + ... + 2487648.

It is an arithmetic number, because the mean of its divisors is an integer number (832013154).

Almost surely, 2^12644211696 is an apocalyptic number.

12644211696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12644211696 is an abundant number, since it is smaller than the sum of its proper divisors (20636314464).

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

12644211696 is a wasteful number, since it uses less digits than its factorization.

12644211696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970273 (or 4970267 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The spelling of 12644211696 in words is "twelve billion, six hundred forty-four million, two hundred eleven thousand, six hundred ninety-six".