229638388326497 has 2 divisors, whose sum is σ = 229638388326498. Its totient is φ = 229638388326496.

The previous prime is 229638388326421. The next prime is 229638388326499. The reversal of 229638388326497 is 794623883836922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141523952275456 + 88114436051041 = 11896384^2 + 9386929^2 .

It is a cyclic number.

It is not a de Polignac number, because 229638388326497 - 2⁴² = 225240341815393 is a prime.

Together with 229638388326499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (229638388326499) 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, 114819194163248 + 114819194163249.

It is an arithmetic number, because the mean of its divisors is an integer number (114819194163249).

Almost surely, 2^{229638388326497} is an apocalyptic number.

It is an amenable number.

229638388326497 is a deficient number, since it is larger than the sum of its proper divisors (1).

229638388326497 is an equidigital number, since it uses as much as digits as its factorization.

229638388326497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9029615616, while the sum is 80.

The spelling of 229638388326497 in words is "two hundred twenty-nine trillion, six hundred thirty-eight billion, three hundred eighty-eight million, three hundred twenty-six thousand, four hundred ninety-seven".