168421068241 has 2 divisors, whose sum is σ = 168421068242. Its totient is φ = 168421068240.

The previous prime is 168421068239. The next prime is 168421068293. The reversal of 168421068241 is 142860124861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129800957841 + 38620110400 = 360279^2 + 196520^2 .

It is an emirp because it is prime and its reverse (142860124861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168421068241 - 2¹ = 168421068239 is a prime.

Together with 168421068239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (168421968241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84210534120 + 84210534121.

It is an arithmetic number, because the mean of its divisors is an integer number (84210534121).

Almost surely, 2^168421068241 is an apocalyptic number.

It is an amenable number.

168421068241 is a deficient number, since it is larger than the sum of its proper divisors (1).

168421068241 is an equidigital number, since it uses as much as digits as its factorization.

168421068241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 168421068241 in words is "one hundred sixty-eight billion, four hundred twenty-one million, sixty-eight thousand, two hundred forty-one".