866345543668 has 24 divisors (see below), whose sum is σ = 1669389722784. Its totient is φ = 390113114400.

The previous prime is 866345543659. The next prime is 866345543689.

866345543668 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92003103 + ... + 92012518.

It is an arithmetic number, because the mean of its divisors is an integer number (69557905116).

Almost surely, 2^866345543668 is an apocalyptic number.

It is an amenable number.

866345543668 is a deficient number, since it is larger than the sum of its proper divisors (803044179116).

866345543668 is a wasteful number, since it uses less digits than its factorization.

866345543668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184015743 (or 184015741 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 64.

The spelling of 866345543668 in words is "eight hundred sixty-six billion, three hundred forty-five million, five hundred forty-three thousand, six hundred sixty-eight".