20344423441 has 2 divisors, whose sum is σ = 20344423442. Its totient is φ = 20344423440.

The previous prime is 20344423399. The next prime is 20344423457. The reversal of 20344423441 is 14432444302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15900201216 + 4444222225 = 126096^2 + 66665^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344423441 - 2⁷ = 20344423313 is a prime.

It is not a weakly prime, because it can be changed into another prime (20344420441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172211720 + 10172211721.

It is an arithmetic number, because the mean of its divisors is an integer number (10172211721).

Almost surely, 2^20344423441 is an apocalyptic number.

It is an amenable number.

20344423441 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344423441 is an equidigital number, since it uses as much as digits as its factorization.

20344423441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20344423441 its reverse (14432444302), we get a palindrome (34776867743).

The spelling of 20344423441 in words is "twenty billion, three hundred forty-four million, four hundred twenty-three thousand, four hundred forty-one".