11556253233 has 20 divisors (see below), whose sum is σ = 19729195200. Its totient is φ = 6603572952.

The previous prime is 11556253231. The next prime is 11556253237. The reversal of 11556253233 is 33235265511.

11556253233 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 625 + 3 + 23 + 3 = 666.

11556253233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11556253233 - 2¹ = 11556253231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11556253231) 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 19 ways as a sum of consecutive naturals, for example, 10190133 + ... + 10191266.

It is an arithmetic number, because the mean of its divisors is an integer number (986459760).

Almost surely, 2^11556253233 is an apocalyptic number.

It is an amenable number.

11556253233 is a deficient number, since it is larger than the sum of its proper divisors (8172941967).

11556253233 is an equidigital number, since it uses as much as digits as its factorization.

11556253233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20381418 (or 20381409 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The spelling of 11556253233 in words is "eleven billion, five hundred fifty-six million, two hundred fifty-three thousand, two hundred thirty-three".