20440042204303 has 2 divisors, whose sum is σ = 20440042204304. Its totient is φ = 20440042204302.

The previous prime is 20440042204117. The next prime is 20440042204321. The reversal of 20440042204303 is 30340224004402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20440042204303 - 2¹³ = 20440042196111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20440042204363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220021102151 + 10220021102152.

It is an arithmetic number, because the mean of its divisors is an integer number (10220021102152).

Almost surely, 2^{20440042204303} is an apocalyptic number.

20440042204303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20440042204303 is an equidigital number, since it uses as much as digits as its factorization.

20440042204303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20440042204303 its reverse (30340224004402), we get a palindrome (50780266208705).

The spelling of 20440042204303 in words is "twenty trillion, four hundred forty billion, forty-two million, two hundred four thousand, three hundred three".