12438554860 has 12 divisors (see below), whose sum is σ = 26120965248. Its totient is φ = 4975421936.

The previous prime is 12438554851. The next prime is 12438554861. The reversal of 12438554860 is 6845583421.

12438554860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12438554860.

It is not an unprimeable number, because it can be changed into a prime (12438554861) by changing a digit.

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, 310963852 + ... + 310963891.

It is an arithmetic number, because the mean of its divisors is an integer number (2176747104).

Almost surely, 2^12438554860 is an apocalyptic number.

12438554860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12438554860 is an abundant number, since it is smaller than the sum of its proper divisors (13682410388).

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

12438554860 is a wasteful number, since it uses less digits than its factorization.

12438554860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621927752 (or 621927750 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 12438554860 in words is "twelve billion, four hundred thirty-eight million, five hundred fifty-four thousand, eight hundred sixty".