20043424401 has 64 divisors (see below), whose sum is σ = 36851920896. Its totient is φ = 9351417600.

The previous prime is 20043424391. The next prime is 20043424409. The reversal of 20043424401 is 10442434002.

It is a happy number.

It is not a de Polignac number, because 20043424401 - 2¹⁰ = 20043423377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20043424409) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20916 + ... + 201306.

It is an arithmetic number, because the mean of its divisors is an integer number (575811264).

Almost surely, 2^20043424401 is an apocalyptic number.

20043424401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20043424401 is a deficient number, since it is larger than the sum of its proper divisors (16808496495).

20043424401 is a wasteful number, since it uses less digits than its factorization.

20043424401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180462.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20043424401 its reverse (10442434002), we get a palindrome (30485858403).

It can be divided in two parts, 20043 and 424401, that added together give a palindrome (444444).

The spelling of 20043424401 in words is "twenty billion, forty-three million, four hundred twenty-four thousand, four hundred one".