211433366189 has 2 divisors, whose sum is σ = 211433366190. Its totient is φ = 211433366188.

The previous prime is 211433366143. The next prime is 211433366191. The reversal of 211433366189 is 981663334112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127613272900 + 83820093289 = 357230^2 + 289517^2 .

It is a cyclic number.

It is not a de Polignac number, because 211433366189 - 2²⁴ = 211416588973 is a prime.

Together with 211433366191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211433360189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105716683094 + 105716683095.

It is an arithmetic number, because the mean of its divisors is an integer number (105716683095).

Almost surely, 2^211433366189 is an apocalyptic number.

It is an amenable number.

211433366189 is a deficient number, since it is larger than the sum of its proper divisors (1).

211433366189 is an equidigital number, since it uses as much as digits as its factorization.

211433366189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The spelling of 211433366189 in words is "two hundred eleven billion, four hundred thirty-three million, three hundred sixty-six thousand, one hundred eighty-nine".