211536368149 has 2 divisors, whose sum is σ = 211536368150. Its totient is φ = 211536368148.

The previous prime is 211536368101. The next prime is 211536368201. The reversal of 211536368149 is 941863635112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160254501124 + 51281867025 = 400318^2 + 226455^2 .

It is a cyclic number.

It is not a de Polignac number, because 211536368149 - 2³¹ = 209388884501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211536338149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105768184074 + 105768184075.

It is an arithmetic number, because the mean of its divisors is an integer number (105768184075).

Almost surely, 2^211536368149 is an apocalyptic number.

It is an amenable number.

211536368149 is a deficient number, since it is larger than the sum of its proper divisors (1).

211536368149 is an equidigital number, since it uses as much as digits as its factorization.

211536368149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 49.

The spelling of 211536368149 in words is "two hundred eleven billion, five hundred thirty-six million, three hundred sixty-eight thousand, one hundred forty-nine".