6611221166 has 32 divisors (see below), whose sum is σ = 11120247648. Its totient is φ = 2922250240.

The previous prime is 6611221151. The next prime is 6611221187.

6611221166 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106670 + ... + 156846.

It is an arithmetic number, because the mean of its divisors is an integer number (347507739).

Almost surely, 2^6611221166 is an apocalyptic number.

6611221166 is a deficient number, since it is larger than the sum of its proper divisors (4509026482).

6611221166 is a wasteful number, since it uses less digits than its factorization.

6611221166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50356.

The product of its digits is 5184, while the sum is 32.

The square root of 6611221166 is about 81309.4162197712. The cubic root of 6611221166 is about 1876.8399044976.

It can be divided in two parts, 66112 and 21166, that added together give a palindrome (87278).

The spelling of 6611221166 in words is "six billion, six hundred eleven million, two hundred twenty-one thousand, one hundred sixty-six".