866966669668 has 12 divisors (see below), whose sum is σ = 1655118187632. Its totient is φ = 394075758920.

The previous prime is 866966669659. The next prime is 866966669719.

866966669668 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 866966669591 and 866966669600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9851893930 + ... + 9851894017.

It is an arithmetic number, because the mean of its divisors is an integer number (137926515636).

Almost surely, 2^866966669668 is an apocalyptic number.

It is an amenable number.

866966669668 is a deficient number, since it is larger than the sum of its proper divisors (788151517964).

866966669668 is a wasteful number, since it uses less digits than its factorization.

866966669668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703787962 (or 19703787960 counting only the distinct ones).

The product of its digits is 8707129344, while the sum is 82.

The spelling of 866966669668 in words is "eight hundred sixty-six billion, nine hundred sixty-six million, six hundred sixty-nine thousand, six hundred sixty-eight".