20204431441 has 2 divisors, whose sum is σ = 20204431442. Its totient is φ = 20204431440.

The previous prime is 20204431363. The next prime is 20204431453. The reversal of 20204431441 is 14413440202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20077756416 + 126675025 = 141696^2 + 11255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20204431441 - 2³¹ = 18056947793 is a prime.

It is not a weakly prime, because it can be changed into another prime (20204437441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102215720 + 10102215721.

It is an arithmetic number, because the mean of its divisors is an integer number (10102215721).

Almost surely, 2^20204431441 is an apocalyptic number.

It is an amenable number.

20204431441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204431441 is an equidigital number, since it uses as much as digits as its factorization.

20204431441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20204431441 its reverse (14413440202), we get a palindrome (34617871643).

The spelling of 20204431441 in words is "twenty billion, two hundred four million, four hundred thirty-one thousand, four hundred forty-one".