20104424047 has 2 divisors, whose sum is σ = 20104424048. Its totient is φ = 20104424046.

The previous prime is 20104423987. The next prime is 20104424059. The reversal of 20104424047 is 74042440102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20104424047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20104424147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052212023 + 10052212024.

It is an arithmetic number, because the mean of its divisors is an integer number (10052212024).

Almost surely, 2^20104424047 is an apocalyptic number.

20104424047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104424047 is an equidigital number, since it uses as much as digits as its factorization.

20104424047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 28.

Adding to 20104424047 its reverse (74042440102), we get a palindrome (94146864149).

The spelling of 20104424047 in words is "twenty billion, one hundred four million, four hundred twenty-four thousand, forty-seven".