866786464085804 has 12 divisors (see below), whose sum is σ = 1516950230539128. Its totient is φ = 433372112503200.

The previous prime is 866786464085771. The next prime is 866786464085851. The reversal of 866786464085804 is 408580464687668.

866786464085804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5279792582 + ... + 5279956749.

It is an arithmetic number, because the mean of its divisors is an integer number (126412519211594).

Almost surely, 2^{866786464085804} is an apocalyptic number.

It is an amenable number.

866786464085804 is a deficient number, since it is larger than the sum of its proper divisors (650163766453324).

866786464085804 is a wasteful number, since it uses less digits than its factorization.

866786464085804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10559769856 (or 10559769854 counting only the distinct ones).

The product of its (nonzero) digits is 11890851840, while the sum is 80.

The spelling of 866786464085804 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred sixty-four million, eighty-five thousand, eight hundred four".