866446724444459 has 2 divisors, whose sum is σ = 866446724444460. Its totient is φ = 866446724444458.

The previous prime is 866446724444407. The next prime is 866446724444507. The reversal of 866446724444459 is 954444427644668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866446724444459 - 2²⁴ = 866446707667243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866446724444459.

It is not a weakly prime, because it can be changed into another prime (866446724444659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433223362222229 + 433223362222230.

It is an arithmetic number, because the mean of its divisors is an integer number (433223362222230).

Almost surely, 2^{866446724444459} is an apocalyptic number.

866446724444459 is a deficient number, since it is larger than the sum of its proper divisors (1).

866446724444459 is an equidigital number, since it uses as much as digits as its factorization.

866446724444459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17836277760, while the sum is 77.

The spelling of 866446724444459 in words is "eight hundred sixty-six trillion, four hundred forty-six billion, seven hundred twenty-four million, four hundred forty-four thousand, four hundred fifty-nine".