866786486547183 has 16 divisors (see below), whose sum is σ = 1156232112115200. Its totient is φ = 577599285965760.

The previous prime is 866786486547167. The next prime is 866786486547209. The reversal of 866786486547183 is 381745684687668.

It is a happy number.

866786486547183 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 866786486547183 - 2⁴ = 866786486547167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866786486547183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866786486597183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127274163 + ... + 133911483.

It is an arithmetic number, because the mean of its divisors is an integer number (72264507007200).

Almost surely, 2^{866786486547183} is an apocalyptic number.

866786486547183 is a deficient number, since it is larger than the sum of its proper divisors (289445625568017).

866786486547183 is a wasteful number, since it uses less digits than its factorization.

866786486547183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656782.

The product of its digits is 62426972160, while the sum is 87.

The spelling of 866786486547183 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred eighty-six million, five hundred forty-seven thousand, one hundred eighty-three".