4240443072161 has 2 divisors, whose sum is σ = 4240443072162. Its totient is φ = 4240443072160.

The previous prime is 4240443072157. The next prime is 4240443072179. The reversal of 4240443072161 is 1612703440424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4225261135936 + 15181936225 = 2055544^2 + 123215^2 .

It is a cyclic number.

It is not a de Polignac number, because 4240443072161 - 2² = 4240443072157 is a prime.

It is not a weakly prime, because it can be changed into another prime (4240443072191) 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, 2120221536080 + 2120221536081.

It is an arithmetic number, because the mean of its divisors is an integer number (2120221536081).

Almost surely, 2^{4240443072161} is an apocalyptic number.

It is an amenable number.

4240443072161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4240443072161 is an equidigital number, since it uses as much as digits as its factorization.

4240443072161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 38.

The spelling of 4240443072161 in words is "four trillion, two hundred forty billion, four hundred forty-three million, seventy-two thousand, one hundred sixty-one".