11405443808 has 48 divisors (see below), whose sum is σ = 24583169520. Its totient is φ = 5165798400.

The previous prime is 11405443807. The next prime is 11405443873. The reversal of 11405443808 is 80834450411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405443807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41258 + ... + 156566.

It is an arithmetic number, because the mean of its divisors is an integer number (512149365).

Almost surely, 2^11405443808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11405443808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12291584760).

11405443808 is an abundant number, since it is smaller than the sum of its proper divisors (13177725712).

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

11405443808 is a wasteful number, since it uses less digits than its factorization.

11405443808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115611 (or 115603 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 11405443808 in words is "eleven billion, four hundred five million, four hundred forty-three thousand, eight hundred eight".