12396678012 has 18 divisors (see below), whose sum is σ = 31336047288. Its totient is φ = 4132225992.

The previous prime is 12396677999. The next prime is 12396678031. The reversal of 12396678012 is 21087669321.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 5 ways as a sum of consecutive naturals, for example, 172176048 + ... + 172176119.

It is an arithmetic number, because the mean of its divisors is an integer number (1740891516).

Almost surely, 2^12396678012 is an apocalyptic number.

12396678012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12396678012 is an abundant number, since it is smaller than the sum of its proper divisors (18939369276).

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

12396678012 is a wasteful number, since it uses less digits than its factorization.

12396678012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344352177 (or 344352172 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 12396678012 in words is "twelve billion, three hundred ninety-six million, six hundred seventy-eight thousand, twelve".