866786383716287 has 2 divisors, whose sum is σ = 866786383716288. Its totient is φ = 866786383716286.

The previous prime is 866786383716241. The next prime is 866786383716329. The reversal of 866786383716287 is 782617383687668.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866786383716287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 866786383716199 and 866786383716208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866786383716217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433393191858143 + 433393191858144.

It is an arithmetic number, because the mean of its divisors is an integer number (433393191858144).

Almost surely, 2^{866786383716287} is an apocalyptic number.

866786383716287 is a deficient number, since it is larger than the sum of its proper divisors (1).

866786383716287 is an equidigital number, since it uses as much as digits as its factorization.

866786383716287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32774160384, while the sum is 86.

The spelling of 866786383716287 in words is "eight hundred sixty-six trillion, seven hundred eighty-six billion, three hundred eighty-three million, seven hundred sixteen thousand, two hundred eighty-seven".