866786482744285 has 16 divisors (see below), whose sum is σ = 1049455055439216. Its totient is φ = 687222913957888.

The previous prime is 866786482744277. The next prime is 866786482744319. The reversal of 866786482744285 is 582447284687668.

It can be written as a sum of positive squares in 8 ways, for example, as 9201145488921 + 857585337255364 = 3033339^2 + 29284558^2 .

It is a cyclic number.

It is not a de Polignac number, because 866786482744285 - 2³ = 866786482744277 is a prime.

It is a super-2 number, since 2×866786482744285² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72250384 + ... + 83388793.

It is an arithmetic number, because the mean of its divisors is an integer number (65590940964951).

Almost surely, 2^{866786482744285} is an apocalyptic number.

It is an amenable number.

866786482744285 is a deficient number, since it is larger than the sum of its proper divisors (182668572694931).

866786482744285 is a wasteful number, since it uses less digits than its factorization.

866786482744285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155649152.

The product of its digits is 55490641920, while the sum is 85.

The spelling of 866786482744285 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, four hundred eighty-two million, seven hundred forty-four thousand, two hundred eighty-five".