211700891839 has 2 divisors, whose sum is σ = 211700891840. Its totient is φ = 211700891838.

The previous prime is 211700891791. The next prime is 211700891887. The reversal of 211700891839 is 938198007112.

211700891839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (211700891791) and next prime (211700891887).

It is a cyclic number.

It is not a de Polignac number, because 211700891839 - 2⁹ = 211700891327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211700891792 and 211700891801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211700291839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105850445919 + 105850445920.

It is an arithmetic number, because the mean of its divisors is an integer number (105850445920).

Almost surely, 2^211700891839 is an apocalyptic number.

211700891839 is a deficient number, since it is larger than the sum of its proper divisors (1).

211700891839 is an equidigital number, since it uses as much as digits as its factorization.

211700891839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 49.

The spelling of 211700891839 in words is "two hundred eleven billion, seven hundred million, eight hundred ninety-one thousand, eight hundred thirty-nine".