442514328161 has 2 divisors, whose sum is σ = 442514328162. Its totient is φ = 442514328160.

The previous prime is 442514328133. The next prime is 442514328169. The reversal of 442514328161 is 161823415244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260564307025 + 181950021136 = 510455^2 + 426556^2 .

It is a cyclic number.

It is not a de Polignac number, because 442514328161 - 2⁶ = 442514328097 is a prime.

It is not a weakly prime, because it can be changed into another prime (442514328169) 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, 221257164080 + 221257164081.

It is an arithmetic number, because the mean of its divisors is an integer number (221257164081).

Almost surely, 2^442514328161 is an apocalyptic number.

It is an amenable number.

442514328161 is a deficient number, since it is larger than the sum of its proper divisors (1).

442514328161 is an equidigital number, since it uses as much as digits as its factorization.

442514328161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 41.

The spelling of 442514328161 in words is "four hundred forty-two billion, five hundred fourteen million, three hundred twenty-eight thousand, one hundred sixty-one".