12446778908 has 12 divisors (see below), whose sum is σ = 21938568120. Its totient is φ = 6178616592.

The previous prime is 12446778899. The next prime is 12446778919. The reversal of 12446778908 is 80987764421.

12446778908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 11192591 + ... + 11193702.

It is an arithmetic number, because the mean of its divisors is an integer number (1828214010).

Almost surely, 2^12446778908 is an apocalyptic number.

It is an amenable number.

12446778908 is a deficient number, since it is larger than the sum of its proper divisors (9491789212).

12446778908 is a wasteful number, since it uses less digits than its factorization.

12446778908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22386436 (or 22386434 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 12446778908 in words is "twelve billion, four hundred forty-six million, seven hundred seventy-eight thousand, nine hundred eight".