243402245161 has 2 divisors, whose sum is σ = 243402245162. Its totient is φ = 243402245160.

The previous prime is 243402245111. The next prime is 243402245213. The reversal of 243402245161 is 161542204342.

243402245161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159165889936 + 84236355225 = 398956^2 + 290235^2 .

It is a cyclic number.

It is not a de Polignac number, because 243402245161 - 2¹⁹ = 243401720873 is a prime.

It is not a weakly prime, because it can be changed into another prime (243402245111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121701122580 + 121701122581.

It is an arithmetic number, because the mean of its divisors is an integer number (121701122581).

Almost surely, 2^243402245161 is an apocalyptic number.

It is an amenable number.

243402245161 is a deficient number, since it is larger than the sum of its proper divisors (1).

243402245161 is an equidigital number, since it uses as much as digits as its factorization.

243402245161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 243402245161 in words is "two hundred forty-three billion, four hundred two million, two hundred forty-five thousand, one hundred sixty-one".