243219948163 has 2 divisors, whose sum is σ = 243219948164. Its totient is φ = 243219948162.

The previous prime is 243219948161. The next prime is 243219948229. The reversal of 243219948163 is 361849912342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243219948163 - 2¹ = 243219948161 is a prime.

Together with 243219948161, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 243219948163.

It is not a weakly prime, because it can be changed into another prime (243219948161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121609974081 + 121609974082.

It is an arithmetic number, because the mean of its divisors is an integer number (121609974082).

Almost surely, 2^243219948163 is an apocalyptic number.

243219948163 is a deficient number, since it is larger than the sum of its proper divisors (1).

243219948163 is an equidigital number, since it uses as much as digits as its factorization.

243219948163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 52.

The spelling of 243219948163 in words is "two hundred forty-three billion, two hundred nineteen million, nine hundred forty-eight thousand, one hundred sixty-three".