12646652900 has 72 divisors (see below), whose sum is σ = 31403781696. Its totient is φ = 4330454400.

The previous prime is 12646652899. The next prime is 12646652917. The reversal of 12646652900 is 925664621.

It is a happy number.

It is an unprimeable number.

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, 556562 + ... + 578838.

Almost surely, 2^12646652900 is an apocalyptic number.

12646652900 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 12646652900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15701890848).

12646652900 is an abundant number, since it is smaller than the sum of its proper divisors (18757128796).

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

12646652900 is a wasteful number, since it uses less digits than its factorization.

12646652900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23109 (or 23102 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 12646652900 in words is "twelve billion, six hundred forty-six million, six hundred fifty-two thousand, nine hundred".