12386688678 has 96 divisors (see below), whose sum is σ = 33836991552. Its totient is φ = 3187123200.

The previous prime is 12386688659. The next prime is 12386688683. The reversal of 12386688678 is 87688668321.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 25063 + ... + 159378.

It is an arithmetic number, because the mean of its divisors is an integer number (352468662).

Almost surely, 2^12386688678 is an apocalyptic number.

12386688678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12386688678 is an abundant number, since it is smaller than the sum of its proper divisors (21450302874).

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

12386688678 is a wasteful number, since it uses less digits than its factorization.

12386688678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184510 (or 184507 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 12386688678 in words is "twelve billion, three hundred eighty-six million, six hundred eighty-eight thousand, six hundred seventy-eight".