444743322161 has 8 divisors (see below), whose sum is σ = 453145872744. Its totient is φ = 436341185280.

The previous prime is 444743322143. The next prime is 444743322173. The reversal of 444743322161 is 161223347444.

It can be written as a sum of positive squares in 4 ways, for example, as 254162181025 + 190581141136 = 504145^2 + 436556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444743322161 - 2²² = 444739127857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444743322461) 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 7 ways as a sum of consecutive naturals, for example, 2862695 + ... + 3014051.

It is an arithmetic number, because the mean of its divisors is an integer number (56643234093).

Almost surely, 2^444743322161 is an apocalyptic number.

It is an amenable number.

444743322161 is a deficient number, since it is larger than the sum of its proper divisors (8402550583).

444743322161 is a wasteful number, since it uses less digits than its factorization.

444743322161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206851.

The product of its digits is 387072, while the sum is 41.

The spelling of 444743322161 in words is "four hundred forty-four billion, seven hundred forty-three million, three hundred twenty-two thousand, one hundred sixty-one".