6681100166 has 16 divisors (see below), whose sum is σ = 10837713600. Its totient is φ = 3070679808.

The previous prime is 6681100157. The next prime is 6681100199. The reversal of 6681100166 is 6610011866.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 531371 + ... + 543798.

It is an arithmetic number, because the mean of its divisors is an integer number (677357100).

Almost surely, 2^6681100166 is an apocalyptic number.

6681100166 is a deficient number, since it is larger than the sum of its proper divisors (4156613434).

6681100166 is a wasteful number, since it uses less digits than its factorization.

6681100166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075423.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 6681100166 is about 81737.9970760233. The cubic root of 6681100166 is about 1883.4293230180.

The spelling of 6681100166 in words is "six billion, six hundred eighty-one million, one hundred thousand, one hundred sixty-six".