217936116233233 has 2 divisors, whose sum is σ = 217936116233234. Its totient is φ = 217936116233232.

The previous prime is 217936116233207. The next prime is 217936116233291. The reversal of 217936116233233 is 332332611639712.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134647640665729 + 83288475567504 = 11603777^2 + 9126252^2 .

It is a cyclic number.

It is not a de Polignac number, because 217936116233233 - 2³⁷ = 217798677279761 is a prime.

It is not a weakly prime, because it can be changed into another prime (217936116233333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108968058116616 + 108968058116617.

It is an arithmetic number, because the mean of its divisors is an integer number (108968058116617).

Almost surely, 2^{217936116233233} is an apocalyptic number.

It is an amenable number.

217936116233233 is a deficient number, since it is larger than the sum of its proper divisors (1).

217936116233233 is an equidigital number, since it uses as much as digits as its factorization.

217936116233233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 52.

The spelling of 217936116233233 in words is "two hundred seventeen trillion, nine hundred thirty-six billion, one hundred sixteen million, two hundred thirty-three thousand, two hundred thirty-three".