20044440323 has 4 divisors (see below), whose sum is σ = 20285939688. Its totient is φ = 19802940960.

The previous prime is 20044440307. The next prime is 20044440389. The reversal of 20044440323 is 32304444002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20044440323 - 2⁴ = 20044440307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20044440292 and 20044440301.

It is not an unprimeable number, because it can be changed into a prime (20044940323) 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, 120749558 + ... + 120749723.

It is an arithmetic number, because the mean of its divisors is an integer number (5071484922).

Almost surely, 2^20044440323 is an apocalyptic number.

20044440323 is a deficient number, since it is larger than the sum of its proper divisors (241499365).

20044440323 is an equidigital number, since it uses as much as digits as its factorization.

20044440323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241499364.

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 20044440323 its reverse (32304444002), we get a palindrome (52348884325).

The spelling of 20044440323 in words is "twenty billion, forty-four million, four hundred forty thousand, three hundred twenty-three".