11323778886 has 128 divisors (see below), whose sum is σ = 30555648000. Its totient is φ = 3039265152.

The previous prime is 11323778881. The next prime is 11323778887. The reversal of 11323778886 is 68887732311.

11323778886 is a `hidden beast` number, since 113 + 2 + 377 + 88 + 86 = 666.

11323778886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11323778881) 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 63 ways as a sum of consecutive naturals, for example, 391635 + ... + 419553.

It is an arithmetic number, because the mean of its divisors is an integer number (238716000).

Almost surely, 2^11323778886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11323778886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15277824000).

11323778886 is an abundant number, since it is smaller than the sum of its proper divisors (19231869114).

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

11323778886 is a wasteful number, since it uses less digits than its factorization.

11323778886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28003 (or 27997 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 11323778886 in words is "eleven billion, three hundred twenty-three million, seven hundred seventy-eight thousand, eight hundred eighty-six".