12261868648 has 16 divisors (see below), whose sum is σ = 23525678880. Its totient is φ = 5988354288.

The previous prime is 12261868639. The next prime is 12261868651. The reversal of 12261868648 is 84686816221.

It is a happy number.

12261868648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12261868595 and 12261868604.

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, 17822140 + ... + 17822827.

It is an arithmetic number, because the mean of its divisors is an integer number (1470354930).

Almost surely, 2^12261868648 is an apocalyptic number.

It is an amenable number.

12261868648 is a deficient number, since it is larger than the sum of its proper divisors (11263810232).

12261868648 is a wasteful number, since it uses less digits than its factorization.

12261868648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35645016 (or 35645012 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 52.

The spelling of 12261868648 in words is "twelve billion, two hundred sixty-one million, eight hundred sixty-eight thousand, six hundred forty-eight".