11008043856 has 120 divisors (see below), whose sum is σ = 31991674624. Its totient is φ = 3664362240.

The previous prime is 11008043819. The next prime is 11008043857. The reversal of 11008043856 is 65834080011.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11008043856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11008043857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3851580 + ... + 3854436.

Almost surely, 2^11008043856 is an apocalyptic number.

11008043856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11008043856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15995837312).

11008043856 is an abundant number, since it is smaller than the sum of its proper divisors (20983630768).

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

11008043856 is an equidigital number, since it uses as much as digits as its factorization.

11008043856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871 (or 3853 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 11008043856 in words is "eleven billion, eight million, forty-three thousand, eight hundred fifty-six".