866363412823 has 2 divisors, whose sum is σ = 866363412824. Its totient is φ = 866363412822.

The previous prime is 866363412809. The next prime is 866363412911. The reversal of 866363412823 is 328214363668.

866363412823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866363412823 - 2²⁵ = 866329858391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866363412623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433181706411 + 433181706412.

It is an arithmetic number, because the mean of its divisors is an integer number (433181706412).

Almost surely, 2^866363412823 is an apocalyptic number.

866363412823 is a deficient number, since it is larger than the sum of its proper divisors (1).

866363412823 is an equidigital number, since it uses as much as digits as its factorization.

866363412823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 52.

The spelling of 866363412823 in words is "eight hundred sixty-six billion, three hundred sixty-three million, four hundred twelve thousand, eight hundred twenty-three".