11856844556 has 12 divisors (see below), whose sum is σ = 20750240280. Its totient is φ = 5928204480.

The previous prime is 11856844487. The next prime is 11856844577. The reversal of 11856844556 is 65544865811.

It is a junction number, because it is equal to n+sod(n) for n = 11856844498 and 11856844507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187115 + ... + 242333.

It is an arithmetic number, because the mean of its divisors is an integer number (1729186690).

Almost surely, 2^11856844556 is an apocalyptic number.

It is an amenable number.

11856844556 is a deficient number, since it is larger than the sum of its proper divisors (8893395724).

11856844556 is a wasteful number, since it uses less digits than its factorization.

11856844556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108904 (or 108902 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 53.

The spelling of 11856844556 in words is "eleven billion, eight hundred fifty-six million, eight hundred forty-four thousand, five hundred fifty-six".