20424441423 has 4 divisors (see below), whose sum is σ = 27232588568. Its totient is φ = 13616294280.

The previous prime is 20424441421. The next prime is 20424441431. The reversal of 20424441423 is 32414442402.

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

It is not a de Polignac number, because 20424441423 - 2¹ = 20424441421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424441421) 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 3 ways as a sum of consecutive naturals, for example, 3404073568 + ... + 3404073573.

It is an arithmetic number, because the mean of its divisors is an integer number (6808147142).

Almost surely, 2^20424441423 is an apocalyptic number.

20424441423 is a deficient number, since it is larger than the sum of its proper divisors (6808147145).

20424441423 is an equidigital number, since it uses as much as digits as its factorization.

20424441423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808147144.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20424441423 its reverse (32414442402), we get a palindrome (52838883825).

The spelling of 20424441423 in words is "twenty billion, four hundred twenty-four million, four hundred forty-one thousand, four hundred twenty-three".