11566611016 has 16 divisors (see below), whose sum is σ = 21695018940. Its totient is φ = 5781272640.

The previous prime is 11566610989. The next prime is 11566611127. The reversal of 11566611016 is 61011666511.

It can be written as a sum of positive squares in 2 ways, for example, as 11481122500 + 85488516 = 107150^2 + 9246^2 .

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, 229791 + ... + 275566.

Almost surely, 2^11566611016 is an apocalyptic number.

It is an amenable number.

11566611016 is a deficient number, since it is larger than the sum of its proper divisors (10128407924).

11566611016 is a wasteful number, since it uses less digits than its factorization.

11566611016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508224 (or 508220 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 11566611016 in words is "eleven billion, five hundred sixty-six million, six hundred eleven thousand, sixteen".