866363412887 has 4 divisors (see below), whose sum is σ = 990129614736. Its totient is φ = 742597211040.

The previous prime is 866363412823. The next prime is 866363412911. The reversal of 866363412887 is 788214363668.

866363412887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866363412887 - 2⁶ = 866363412823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866366412887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61883100914 + ... + 61883100927.

It is an arithmetic number, because the mean of its divisors is an integer number (247532403684).

Almost surely, 2^866363412887 is an apocalyptic number.

866363412887 is a deficient number, since it is larger than the sum of its proper divisors (123766201849).

866363412887 is a wasteful number, since it uses less digits than its factorization.

866363412887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123766201848.

The product of its digits is 55738368, while the sum is 62.

The spelling of 866363412887 in words is "eight hundred sixty-six billion, three hundred sixty-three million, four hundred twelve thousand, eight hundred eighty-seven".