11566866224 has 80 divisors (see below), whose sum is σ = 23546617920. Its totient is φ = 5497282560.

The previous prime is 11566866211. The next prime is 11566866263. The reversal of 11566866224 is 42266866511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8755484 + ... + 8756804.

It is an arithmetic number, because the mean of its divisors is an integer number (294332724).

Almost surely, 2^11566866224 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 11566866224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11773308960).

11566866224 is an abundant number, since it is smaller than the sum of its proper divisors (11979751696).

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

11566866224 is a wasteful number, since it uses less digits than its factorization.

11566866224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1632 counting only the distinct ones).

The product of its digits is 829440, while the sum is 47.

The spelling of 11566866224 in words is "eleven billion, five hundred sixty-six million, eight hundred sixty-six thousand, two hundred twenty-four".