20424401204 has 6 divisors (see below), whose sum is σ = 35742702114. Its totient is φ = 10212200600.

The previous prime is 20424401183. The next prime is 20424401227. The reversal of 20424401204 is 40210442402.

It can be written as a sum of positive squares in only one way, i.e., 15319012900 + 5105388304 = 123770^2 + 71452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20424401204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553050147 + ... + 2553050154.

It is an arithmetic number, because the mean of its divisors is an integer number (5957117019).

Almost surely, 2^20424401204 is an apocalyptic number.

It is an amenable number.

20424401204 is a deficient number, since it is larger than the sum of its proper divisors (15318300910).

20424401204 is a wasteful number, since it uses less digits than its factorization.

20424401204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106100305 (or 5106100303 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20424401204 its reverse (40210442402), we get a palindrome (60634843606).

The spelling of 20424401204 in words is "twenty billion, four hundred twenty-four million, four hundred one thousand, two hundred four".