866450860771 has 2 divisors, whose sum is σ = 866450860772. Its totient is φ = 866450860770.

The previous prime is 866450860753. The next prime is 866450860831. The reversal of 866450860771 is 177068054668.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 866450860771 - 2¹⁷ = 866450729699 is a prime.

It is not a weakly prime, because it can be changed into another prime (866450860741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433225430385 + 433225430386.

It is an arithmetic number, because the mean of its divisors is an integer number (433225430386).

Almost surely, 2^866450860771 is an apocalyptic number.

866450860771 is a deficient number, since it is larger than the sum of its proper divisors (1).

866450860771 is an equidigital number, since it uses as much as digits as its factorization.

866450860771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 866450860771 in words is "eight hundred sixty-six billion, four hundred fifty million, eight hundred sixty thousand, seven hundred seventy-one".