6611661166 has 16 divisors (see below), whose sum is σ = 11070690048. Its totient is φ = 2935409400.

The previous prime is 6611661163. The next prime is 6611661187.

6611661166 is nontrivially palindromic in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6611661163) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3493590 + ... + 3495481.

It is an arithmetic number, because the mean of its divisors is an integer number (691918128).

Almost surely, 2^6611661166 is an apocalyptic number.

6611661166 is a deficient number, since it is larger than the sum of its proper divisors (4459028882).

6611661166 is a wasteful number, since it uses less digits than its factorization.

6611661166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989127.

The product of its digits is 46656, while the sum is 40.

The square root of 6611661166 is about 81312.1218884368. The cubic root of 6611661166 is about 1876.8815403375.

The spelling of 6611661166 in words is "six billion, six hundred eleven million, six hundred sixty-one thousand, one hundred sixty-six".