866716411189 has 2 divisors, whose sum is σ = 866716411190. Its totient is φ = 866716411188.

The previous prime is 866716411157. The next prime is 866716411357. The reversal of 866716411189 is 981114617668.

It is a happy number.

866716411189 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 can be written as a sum of positive squares in only one way, i.e., 657748574289 + 208967836900 = 811017^2 + 457130^2 .

It is a cyclic number.

It is not a de Polignac number, because 866716411189 - 2⁵ = 866716411157 is a prime.

It is a super-3 number, since 3×866716411189³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866716411109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433358205594 + 433358205595.

It is an arithmetic number, because the mean of its divisors is an integer number (433358205595).

Almost surely, 2^866716411189 is an apocalyptic number.

It is an amenable number.

866716411189 is a deficient number, since it is larger than the sum of its proper divisors (1).

866716411189 is an equidigital number, since it uses as much as digits as its factorization.

866716411189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 58.

The spelling of 866716411189 in words is "eight hundred sixty-six billion, seven hundred sixteen million, four hundred eleven thousand, one hundred eighty-nine".