6666666666666 has 32 divisors (see below), whose sum is σ = 13756866543360. Its totient is φ = 2152694841024.

The previous prime is 6666666666629. The next prime is 6666666666683.

6666666666666 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

6666666666666 is a modest number, since divided by 6666666 gives 666666 as remainder.

6666666666666 is a nontrivial repdigit in base 10.

It is a plaindrome in base 10.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6666666666591 and 6666666666600.

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, 132660705 + ... + 132710948.

It is an arithmetic number, because the mean of its divisors is an integer number (429902079480).

Almost surely, 2^{6666666666666} is an apocalyptic number.

6666666666666 is an abundant number, since it is smaller than the sum of its proper divisors (7090199876694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666666666666 is a wasteful number, since it uses less digits than its factorization.

6666666666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265371790.

The product of its digits is 13060694016, while the sum is 78.

The spelling of 6666666666666 in words is "six trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six".