20424105404 has 24 divisors (see below), whose sum is σ = 37657616640. Its totient is φ = 9665765424.

The previous prime is 20424105391. The next prime is 20424105421. The reversal of 20424105404 is 40450142402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37994 + ... + 205649.

It is an arithmetic number, because the mean of its divisors is an integer number (1569067360).

Almost surely, 2^20424105404 is an apocalyptic number.

It is an amenable number.

20424105404 is a deficient number, since it is larger than the sum of its proper divisors (17233511236).

20424105404 is a wasteful number, since it uses less digits than its factorization.

20424105404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244769 (or 244767 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 20424105404 its reverse (40450142402), we get a palindrome (60874247806).

The spelling of 20424105404 in words is "twenty billion, four hundred twenty-four million, one hundred five thousand, four hundred four".