6681986179 has 16 divisors (see below), whose sum is σ = 7471570176. Its totient is φ = 5924556000.

The previous prime is 6681986149. The next prime is 6681986203. The reversal of 6681986179 is 9716891866.

It is not a de Polignac number, because 6681986179 - 2⁵ = 6681986147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6681986149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29554 + ... + 119320.

It is an arithmetic number, because the mean of its divisors is an integer number (466973136).

Almost surely, 2^6681986179 is an apocalyptic number.

6681986179 is a deficient number, since it is larger than the sum of its proper divisors (789583997).

6681986179 is a wasteful number, since it uses less digits than its factorization.

6681986179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89946.

The product of its digits is 7838208, while the sum is 61.

The square root of 6681986179 is about 81743.4167318690. The cubic root of 6681986179 is about 1883.5125762279.

The spelling of 6681986179 in words is "six billion, six hundred eighty-one million, nine hundred eighty-six thousand, one hundred seventy-nine".