163436543442241 has 2 divisors, whose sum is σ = 163436543442242. Its totient is φ = 163436543442240.

The previous prime is 163436543442157. The next prime is 163436543442253. The reversal of 163436543442241 is 142244345634361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118022476354225 + 45414067088016 = 10863815^2 + 6738996^2 .

It is an emirp because it is prime and its reverse (142244345634361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163436543442241 - 2²⁷ = 163436409224513 is a prime.

It is not a weakly prime, because it can be changed into another prime (163436543442281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81718271721120 + 81718271721121.

It is an arithmetic number, because the mean of its divisors is an integer number (81718271721121).

Almost surely, 2^{163436543442241} is an apocalyptic number.

It is an amenable number.

163436543442241 is a deficient number, since it is larger than the sum of its proper divisors (1).

163436543442241 is an equidigital number, since it uses as much as digits as its factorization.

163436543442241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19906560, while the sum is 52.

The spelling of 163436543442241 in words is "one hundred sixty-three trillion, four hundred thirty-six billion, five hundred forty-three million, four hundred forty-two thousand, two hundred forty-one".