12386642678740 has 48 divisors (see below), whose sum is σ = 28718559979200. Its totient is φ = 4449965818880.

The previous prime is 12386642678737. The next prime is 12386642678743. The reversal of 12386642678740 is 4787624668321.

It is an interprime number because it is at equal distance from previous prime (12386642678737) and next prime (12386642678743).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12386642678743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339155965 + ... + 339192484.

It is an arithmetic number, because the mean of its divisors is an integer number (598303332900).

Almost surely, 2^{12386642678740} is an apocalyptic number.

12386642678740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12386642678740 is an abundant number, since it is smaller than the sum of its proper divisors (16331917300460).

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

12386642678740 is a wasteful number, since it uses less digits than its factorization.

12386642678740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678348552 (or 678348550 counting only the distinct ones).

The product of its (nonzero) digits is 130056192, while the sum is 64.

The spelling of 12386642678740 in words is "twelve trillion, three hundred eighty-six billion, six hundred forty-two million, six hundred seventy-eight thousand, seven hundred forty".