11011566660666 has 96 divisors (see below), whose sum is σ = 26070873736320. Its totient is φ = 3079977479040.

The previous prime is 11011566660583. The next prime is 11011566660697. The reversal of 11011566660666 is 66606666511011.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 295570096 + ... + 295607348.

It is an arithmetic number, because the mean of its divisors is an integer number (271571601420).

Almost surely, 2^{11011566660666} is an apocalyptic number.

11011566660666 is an abundant number, since it is smaller than the sum of its proper divisors (15059307075654).

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

11011566660666 is a wasteful number, since it uses less digits than its factorization.

11011566660666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68612 (or 68601 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 11011566660666 in words is "eleven trillion, eleven billion, five hundred sixty-six million, six hundred sixty thousand, six hundred sixty-six".