211986745237 has 2 divisors, whose sum is σ = 211986745238. Its totient is φ = 211986745236.

The previous prime is 211986745213. The next prime is 211986745249. The reversal of 211986745237 is 732547689112.

211986745237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170464939876 + 41521805361 = 412874^2 + 203769^2 .

It is a cyclic number.

It is not a de Polignac number, because 211986745237 - 2³¹ = 209839261589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211986745277) 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, 105993372618 + 105993372619.

It is an arithmetic number, because the mean of its divisors is an integer number (105993372619).

Almost surely, 2^211986745237 is an apocalyptic number.

It is an amenable number.

211986745237 is a deficient number, since it is larger than the sum of its proper divisors (1).

211986745237 is an equidigital number, since it uses as much as digits as its factorization.

211986745237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 55.

The spelling of 211986745237 in words is "two hundred eleven billion, nine hundred eighty-six million, seven hundred forty-five thousand, two hundred thirty-seven".