217712240611 has 2 divisors, whose sum is σ = 217712240612. Its totient is φ = 217712240610.

The previous prime is 217712240587. The next prime is 217712240657. The reversal of 217712240611 is 116042217712.

217712240611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217712240611 - 2⁹ = 217712240099 is a prime.

It is not a weakly prime, because it can be changed into another prime (217712240111) 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, 108856120305 + 108856120306.

It is an arithmetic number, because the mean of its divisors is an integer number (108856120306).

Almost surely, 2^217712240611 is an apocalyptic number.

217712240611 is a deficient number, since it is larger than the sum of its proper divisors (1).

217712240611 is an equidigital number, since it uses as much as digits as its factorization.

217712240611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 217712240611 in words is "two hundred seventeen billion, seven hundred twelve million, two hundred forty thousand, six hundred eleven".