11203432866 has 48 divisors (see below), whose sum is σ = 25262406624. Its totient is φ = 3721235904.

The previous prime is 11203432841. The next prime is 11203432873. The reversal of 11203432866 is 66823430211.

11203432866 is a `hidden beast` number, since 11 + 20 + 343 + 286 + 6 = 666.

11203432866 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 11203432866.

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 23 ways as a sum of consecutive naturals, for example, 96810 + ... + 178266.

It is an arithmetic number, because the mean of its divisors is an integer number (526300138).

Almost surely, 2^11203432866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11203432866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12631203312).

11203432866 is an abundant number, since it is smaller than the sum of its proper divisors (14058973758).

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

11203432866 is an equidigital number, since it uses as much as digits as its factorization.

11203432866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81757 (or 81745 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 11203432866 in words is "eleven billion, two hundred three million, four hundred thirty-two thousand, eight hundred sixty-six".