42330366161 has 2 divisors, whose sum is σ = 42330366162. Its totient is φ = 42330366160.

The previous prime is 42330366151. The next prime is 42330366179. The reversal of 42330366161 is 16166303324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25298811136 + 17031555025 = 159056^2 + 130505^2 .

It is a cyclic number.

It is not a de Polignac number, because 42330366161 - 2⁶ = 42330366097 is a prime.

It is not a weakly prime, because it can be changed into another prime (42330366151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165183080 + 21165183081.

It is an arithmetic number, because the mean of its divisors is an integer number (21165183081).

Almost surely, 2^42330366161 is an apocalyptic number.

It is an amenable number.

42330366161 is a deficient number, since it is larger than the sum of its proper divisors (1).

42330366161 is an equidigital number, since it uses as much as digits as its factorization.

42330366161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 35.

Adding to 42330366161 its reverse (16166303324), we get a palindrome (58496669485).

The spelling of 42330366161 in words is "forty-two billion, three hundred thirty million, three hundred sixty-six thousand, one hundred sixty-one".