11166660205 has 16 divisors (see below), whose sum is σ = 14490109440. Its totient is φ = 8228945152.

The previous prime is 11166660203. The next prime is 11166660223. The reversal of 11166660205 is 50206666111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11166660205 - 2¹ = 11166660203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166660203) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1393585 + ... + 1401574.

It is an arithmetic number, because the mean of its divisors is an integer number (905631840).

Almost surely, 2^11166660205 is an apocalyptic number.

It is an amenable number.

11166660205 is a deficient number, since it is larger than the sum of its proper divisors (3323449235).

11166660205 is a wasteful number, since it uses less digits than its factorization.

11166660205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795228.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 11166660205 in words is "eleven billion, one hundred sixty-six million, six hundred sixty thousand, two hundred five".