20143440241 has 2 divisors, whose sum is σ = 20143440242. Its totient is φ = 20143440240.

The previous prime is 20143440173. The next prime is 20143440253. The reversal of 20143440241 is 14204434102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18361334016 + 1782106225 = 135504^2 + 42215^2 .

It is a cyclic number.

It is not a de Polignac number, because 20143440241 - 2²³ = 20135051633 is a prime.

It is not a weakly prime, because it can be changed into another prime (20143440041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071720120 + 10071720121.

It is an arithmetic number, because the mean of its divisors is an integer number (10071720121).

Almost surely, 2^20143440241 is an apocalyptic number.

It is an amenable number.

20143440241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20143440241 is an equidigital number, since it uses as much as digits as its factorization.

20143440241 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20143440241 its reverse (14204434102), we get a palindrome (34347874343).

The spelling of 20143440241 in words is "twenty billion, one hundred forty-three million, four hundred forty thousand, two hundred forty-one".