11566475012 has 6 divisors (see below), whose sum is σ = 20241331278. Its totient is φ = 5783237504.

The previous prime is 11566475009. The next prime is 11566475033. The reversal of 11566475012 is 21057466511.

It can be written as a sum of positive squares in only one way, i.e., 10228085956 + 1338389056 = 101134^2 + 36584^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445809373 + ... + 1445809380.

It is an arithmetic number, because the mean of its divisors is an integer number (3373555213).

Almost surely, 2^11566475012 is an apocalyptic number.

It is an amenable number.

11566475012 is a deficient number, since it is larger than the sum of its proper divisors (8674856266).

11566475012 is a wasteful number, since it uses less digits than its factorization.

11566475012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891618757 (or 2891618755 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 11566475012 in words is "eleven billion, five hundred sixty-six million, four hundred seventy-five thousand, twelve".