161444716 has 48 divisors (see below), whose sum is σ = 310746240. Its totient is φ = 73082880.

The previous prime is 161444707. The next prime is 161444719. The reversal of 161444716 is 617444161.

161444716 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (161444719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219886 + ... + 220618.

It is an arithmetic number, because the mean of its divisors is an integer number (6473880).

Almost surely, 2^161444716 is an apocalyptic number.

It is an amenable number.

161444716 is a deficient number, since it is larger than the sum of its proper divisors (149301524).

161444716 is a wasteful number, since it uses less digits than its factorization.

161444716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 872 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 161444716 is about 12706.0897210747. The cubic root of 161444716 is about 544.5126142355.

Adding to 161444716 its reverse (617444161), we get a palindrome (778888877).

The spelling of 161444716 in words is "one hundred sixty-one million, four hundred forty-four thousand, seven hundred sixteen".