211433330789 has 2 divisors, whose sum is σ = 211433330790. Its totient is φ = 211433330788.

The previous prime is 211433330777. The next prime is 211433330831. The reversal of 211433330789 is 987033334112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182293133764 + 29140197025 = 426958^2 + 170705^2 .

It is a cyclic number.

It is not a de Polignac number, because 211433330789 - 2²⁰ = 211432282213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211433330089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105716665394 + 105716665395.

It is an arithmetic number, because the mean of its divisors is an integer number (105716665395).

Almost surely, 2^211433330789 is an apocalyptic number.

It is an amenable number.

211433330789 is a deficient number, since it is larger than the sum of its proper divisors (1).

211433330789 is an equidigital number, since it uses as much as digits as its factorization.

211433330789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 211433330789 in words is "two hundred eleven billion, four hundred thirty-three million, three hundred thirty thousand, seven hundred eighty-nine".