20424424004 has 24 divisors (see below), whose sum is σ = 35809964568. Its totient is φ = 10193027840.

The previous prime is 20424424001. The next prime is 20424424039. The reversal of 20424424004 is 40042442402.

It can be written as a sum of positive squares in 4 ways, for example, as 1303065604 + 19121358400 = 36098^2 + 138280^2 .

It is not an unprimeable number, because it can be changed into a prime (20424424001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7353464 + ... + 7356240.

It is an arithmetic number, because the mean of its divisors is an integer number (1492081857).

Almost surely, 2^20424424004 is an apocalyptic number.

It is an amenable number.

20424424004 is a deficient number, since it is larger than the sum of its proper divisors (15385540564).

20424424004 is a wasteful number, since it uses less digits than its factorization.

20424424004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575 (or 5573 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20424424004 its reverse (40042442402), we get a palindrome (60466866406).

The spelling of 20424424004 in words is "twenty billion, four hundred twenty-four million, four hundred twenty-four thousand, four".