12663915800 has 24 divisors (see below), whose sum is σ = 29443604700. Its totient is φ = 5065566240.

The previous prime is 12663915787. The next prime is 12663915811. The reversal of 12663915800 is 851936621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31659590 + ... + 31659989.

Almost surely, 2^12663915800 is an apocalyptic number.

12663915800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12663915800 is an abundant number, since it is smaller than the sum of its proper divisors (16779688900).

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

12663915800 is a wasteful number, since it uses less digits than its factorization.

12663915800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63319595 (or 63319586 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 12663915800 in words is "twelve billion, six hundred sixty-three million, nine hundred fifteen thousand, eight hundred".