20045442041 has 2 divisors, whose sum is σ = 20045442042. Its totient is φ = 20045442040.

The previous prime is 20045442019. The next prime is 20045442059. The reversal of 20045442041 is 14024454002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10403184016 + 9642258025 = 101996^2 + 98195^2 .

It is a cyclic number.

It is not a de Polignac number, because 20045442041 - 2³⁰ = 18971700217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20045442041.

It is not a weakly prime, because it can be changed into another prime (20045442341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022721020 + 10022721021.

It is an arithmetic number, because the mean of its divisors is an integer number (10022721021).

Almost surely, 2^20045442041 is an apocalyptic number.

It is an amenable number.

20045442041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20045442041 is an equidigital number, since it uses as much as digits as its factorization.

20045442041 is an evil number, because the sum of its binary digits is even.

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

Adding to 20045442041 its reverse (14024454002), we get a palindrome (34069896043).

The spelling of 20045442041 in words is "twenty billion, forty-five million, four hundred forty-two thousand, forty-one".