238229959494217 has 2 divisors, whose sum is σ = 238229959494218. Its totient is φ = 238229959494216.

The previous prime is 238229959494211. The next prime is 238229959494287. The reversal of 238229959494217 is 712494959922832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216786428821561 + 21443530672656 = 14723669^2 + 4630716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238229959494217 is a prime.

It is not a weakly prime, because it can be changed into another prime (238229959494211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119114979747108 + 119114979747109.

It is an arithmetic number, because the mean of its divisors is an integer number (119114979747109).

Almost surely, 2^{238229959494217} is an apocalyptic number.

It is an amenable number.

238229959494217 is a deficient number, since it is larger than the sum of its proper divisors (1).

238229959494217 is an equidigital number, since it uses as much as digits as its factorization.

238229959494217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1410877440, while the sum is 76.

The spelling of 238229959494217 in words is "two hundred thirty-eight trillion, two hundred twenty-nine billion, nine hundred fifty-nine million, four hundred ninety-four thousand, two hundred seventeen".