163042342481 has 2 divisors, whose sum is σ = 163042342482. Its totient is φ = 163042342480.

The previous prime is 163042342471. The next prime is 163042342501. The reversal of 163042342481 is 184243240361.

It is a happy number.

163042342481 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., 128067358225 + 34974984256 = 357865^2 + 187016^2 .

It is a cyclic number.

It is not a de Polignac number, because 163042342481 - 2⁶ = 163042342417 is a prime.

It is a super-2 number, since 2×163042342481² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163042342471) 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, 81521171240 + 81521171241.

It is an arithmetic number, because the mean of its divisors is an integer number (81521171241).

Almost surely, 2^163042342481 is an apocalyptic number.

It is an amenable number.

163042342481 is a deficient number, since it is larger than the sum of its proper divisors (1).

163042342481 is an equidigital number, since it uses as much as digits as its factorization.

163042342481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 163042342481 in words is "one hundred sixty-three billion, forty-two million, three hundred forty-two thousand, four hundred eighty-one".