866211832111 has 16 divisors (see below), whose sum is σ = 926434428480. Its totient is φ = 807052288000.

The previous prime is 866211832093. The next prime is 866211832133. The reversal of 866211832111 is 111238112668.

It is not a de Polignac number, because 866211832111 - 2⁷ = 866211831983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866211832411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318111 + ... + 1354111.

It is an arithmetic number, because the mean of its divisors is an integer number (57902151780).

Almost surely, 2^866211832111 is an apocalyptic number.

866211832111 is a deficient number, since it is larger than the sum of its proper divisors (60222596369).

866211832111 is a wasteful number, since it uses less digits than its factorization.

866211832111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036514.

The product of its digits is 27648, while the sum is 40.

Adding to 866211832111 its reverse (111238112668), we get a palindrome (977449944779).

The spelling of 866211832111 in words is "eight hundred sixty-six billion, two hundred eleven million, eight hundred thirty-two thousand, one hundred eleven".