442661331161 has 16 divisors (see below), whose sum is σ = 539746416000. Its totient is φ = 354378935040.

The previous prime is 442661331109. The next prime is 442661331163. The reversal of 442661331161 is 161133166244.

It is a cyclic number.

It is not a de Polignac number, because 442661331161 - 2²⁶ = 442594222297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442661331163) 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 in 15 ways as a sum of consecutive naturals, for example, 14182286 + ... + 14213463.

It is an arithmetic number, because the mean of its divisors is an integer number (33734151000).

Almost surely, 2^442661331161 is an apocalyptic number.

It is an amenable number.

442661331161 is a deficient number, since it is larger than the sum of its proper divisors (97085084839).

442661331161 is a wasteful number, since it uses less digits than its factorization.

442661331161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28395904.

The product of its digits is 62208, while the sum is 38.

The spelling of 442661331161 in words is "four hundred forty-two billion, six hundred sixty-one million, three hundred thirty-one thousand, one hundred sixty-one".