11566866084 has 12 divisors (see below), whose sum is σ = 26989354224. Its totient is φ = 3855622024.

The previous prime is 11566866071. The next prime is 11566866109. The reversal of 11566866084 is 48066866511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481952742 + ... + 481952765.

It is an arithmetic number, because the mean of its divisors is an integer number (2249112852).

Almost surely, 2^11566866084 is an apocalyptic number.

It is an amenable number.

11566866084 is an abundant number, since it is smaller than the sum of its proper divisors (15422488140).

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

11566866084 is a wasteful number, since it uses less digits than its factorization.

11566866084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963905514 (or 963905512 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 51.

The spelling of 11566866084 in words is "eleven billion, five hundred sixty-six million, eight hundred sixty-six thousand, eighty-four".