866286445933 has 2 divisors, whose sum is σ = 866286445934. Its totient is φ = 866286445932.

The previous prime is 866286445883. The next prime is 866286445939. The reversal of 866286445933 is 339544682668.

866286445933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 527303988649 + 338982457284 = 726157^2 + 582222^2 .

It is a cyclic number.

It is not a de Polignac number, because 866286445933 - 2²⁵ = 866252891501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866286445939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433143222966 + 433143222967.

It is an arithmetic number, because the mean of its divisors is an integer number (433143222967).

Almost surely, 2^866286445933 is an apocalyptic number.

It is an amenable number.

866286445933 is a deficient number, since it is larger than the sum of its proper divisors (1).

866286445933 is an equidigital number, since it uses as much as digits as its factorization.

866286445933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179159040, while the sum is 64.

The spelling of 866286445933 in words is "eight hundred sixty-six billion, two hundred eighty-six million, four hundred forty-five thousand, nine hundred thirty-three".