12886638680 has 64 divisors (see below), whose sum is σ = 29172830400. Its totient is φ = 5123130880.

The previous prime is 12886638649. The next prime is 12886638727. The reversal of 12886638680 is 8683668821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5411090 + ... + 5413470.

It is an arithmetic number, because the mean of its divisors is an integer number (455825475).

Almost surely, 2^12886638680 is an apocalyptic number.

12886638680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12886638680 is an abundant number, since it is smaller than the sum of its proper divisors (16286191720).

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

12886638680 is a wasteful number, since it uses less digits than its factorization.

12886638680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164 (or 3160 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 12886638680 in words is "twelve billion, eight hundred eighty-six million, six hundred thirty-eight thousand, six hundred eighty".