442981519161 has 4 divisors (see below), whose sum is σ = 590642025552. Its totient is φ = 295321012772.

The previous prime is 442981519159. The next prime is 442981519207. The reversal of 442981519161 is 161915189244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442981519161 - 2¹ = 442981519159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442981519061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73830253191 + ... + 73830253196.

It is an arithmetic number, because the mean of its divisors is an integer number (147660506388).

Almost surely, 2^442981519161 is an apocalyptic number.

It is an amenable number.

442981519161 is a deficient number, since it is larger than the sum of its proper divisors (147660506391).

442981519161 is a wasteful number, since it uses less digits than its factorization.

442981519161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147660506390.

The product of its digits is 622080, while the sum is 51.

The spelling of 442981519161 in words is "four hundred forty-two billion, nine hundred eighty-one million, five hundred nineteen thousand, one hundred sixty-one".