12259842856 has 16 divisors (see below), whose sum is σ = 23072663700. Its totient is φ = 6107132544.

The previous prime is 12259842839. The next prime is 12259842863. The reversal of 12259842856 is 65824895221.

It can be written as a sum of positive squares in 2 ways, for example, as 11743189956 + 516652900 = 108366^2 + 22730^2 .

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 3 ways as a sum of consecutive naturals, for example, 2846325 + ... + 2850628.

Almost surely, 2^12259842856 is an apocalyptic number.

It is an amenable number.

12259842856 is a deficient number, since it is larger than the sum of its proper divisors (10812820844).

12259842856 is a wasteful number, since it uses less digits than its factorization.

12259842856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697228 (or 5697224 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 52.

The spelling of 12259842856 in words is "twelve billion, two hundred fifty-nine million, eight hundred forty-two thousand, eight hundred fifty-six".