198843276941017 has 2 divisors, whose sum is σ = 198843276941018. Its totient is φ = 198843276941016.

The previous prime is 198843276940933. The next prime is 198843276941021. The reversal of 198843276941017 is 710149672348891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155401679572441 + 43441597368576 = 12466021^2 + 6591024^2 .

It is an emirp because it is prime and its reverse (710149672348891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198843276941017 is a prime.

It is not a weakly prime, because it can be changed into another prime (198843276941077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99421638470508 + 99421638470509.

It is an arithmetic number, because the mean of its divisors is an integer number (99421638470509).

Almost surely, 2^{198843276941017} is an apocalyptic number.

It is an amenable number.

198843276941017 is a deficient number, since it is larger than the sum of its proper divisors (1).

198843276941017 is an equidigital number, since it uses as much as digits as its factorization.

198843276941017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 146313216, while the sum is 70.

The spelling of 198843276941017 in words is "one hundred ninety-eight trillion, eight hundred forty-three billion, two hundred seventy-six million, nine hundred forty-one thousand, seventeen".