866495594668 has 12 divisors (see below), whose sum is σ = 1654218862632. Its totient is φ = 393861633920.

The previous prime is 866495594651. The next prime is 866495594737.

866495594668 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 866495594594 and 866495594603.

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 3 ways as a sum of consecutive naturals, for example, 9846540805 + ... + 9846540892.

It is an arithmetic number, because the mean of its divisors is an integer number (137851571886).

Almost surely, 2^866495594668 is an apocalyptic number.

It is an amenable number.

866495594668 is a deficient number, since it is larger than the sum of its proper divisors (787723267964).

866495594668 is a wasteful number, since it uses less digits than its factorization.

866495594668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19693081712 (or 19693081710 counting only the distinct ones).

The product of its digits is 2687385600, while the sum is 76.

The spelling of 866495594668 in words is "eight hundred sixty-six billion, four hundred ninety-five million, five hundred ninety-four thousand, six hundred sixty-eight".