12646452700 has 72 divisors (see below), whose sum is σ = 31741218432. Its totient is φ = 4283666880.

The previous prime is 12646452683. The next prime is 12646452701. The reversal of 12646452700 is 725464621.

It is a self number, because there is not a number n which added to its sum of digits gives 12646452700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12646452701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50734 + ... + 166933.

It is an arithmetic number, because the mean of its divisors is an integer number (440850256).

Almost surely, 2^12646452700 is an apocalyptic number.

12646452700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12646452700 is an abundant number, since it is smaller than the sum of its proper divisors (19094765732).

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

12646452700 is a wasteful number, since it uses less digits than its factorization.

12646452700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217771 (or 217764 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 12646452700 in words is "twelve billion, six hundred forty-six million, four hundred fifty-two thousand, seven hundred".