163171770241 has 2 divisors, whose sum is σ = 163171770242. Its totient is φ = 163171770240.

The previous prime is 163171770227. The next prime is 163171770247. The reversal of 163171770241 is 142077171361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144369601600 + 18802168641 = 379960^2 + 137121^2 .

It is an emirp because it is prime and its reverse (142077171361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163171770241 - 2⁹ = 163171769729 is a prime.

It is a super-3 number, since 3×163171770241³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163171770194 and 163171770203.

It is not a weakly prime, because it can be changed into another prime (163171770247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81585885120 + 81585885121.

It is an arithmetic number, because the mean of its divisors is an integer number (81585885121).

Almost surely, 2^163171770241 is an apocalyptic number.

It is an amenable number.

163171770241 is a deficient number, since it is larger than the sum of its proper divisors (1).

163171770241 is an equidigital number, since it uses as much as digits as its factorization.

163171770241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 40.

The spelling of 163171770241 in words is "one hundred sixty-three billion, one hundred seventy-one million, seven hundred seventy thousand, two hundred forty-one".