12678695472 has 40 divisors (see below), whose sum is σ = 34679963376. Its totient is φ = 3977629696.

The previous prime is 12678695443. The next prime is 12678695483. The reversal of 12678695472 is 27459687621.

It is a happy number.

12678695472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7767993 + ... + 7769624.

Almost surely, 2^12678695472 is an apocalyptic number.

12678695472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12678695472 is an abundant number, since it is smaller than the sum of its proper divisors (22001267904).

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

12678695472 is a wasteful number, since it uses less digits than its factorization.

12678695472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15537645 (or 15537639 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 57.

The spelling of 12678695472 in words is "twelve billion, six hundred seventy-eight million, six hundred ninety-five thousand, four hundred seventy-two".