866603050211 has 2 divisors, whose sum is σ = 866603050212. Its totient is φ = 866603050210.

The previous prime is 866603050123. The next prime is 866603050213. The reversal of 866603050211 is 112050306668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866603050211 - 2¹⁰ = 866603049187 is a prime.

Together with 866603050213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (866603050213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433301525105 + 433301525106.

It is an arithmetic number, because the mean of its divisors is an integer number (433301525106).

Almost surely, 2^866603050211 is an apocalyptic number.

866603050211 is a deficient number, since it is larger than the sum of its proper divisors (1).

866603050211 is an equidigital number, since it uses as much as digits as its factorization.

866603050211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 866603050211 its reverse (112050306668), we get a palindrome (978653356879).

The spelling of 866603050211 in words is "eight hundred sixty-six billion, six hundred three million, fifty thousand, two hundred eleven".