20441420137 has 2 divisors, whose sum is σ = 20441420138. Its totient is φ = 20441420136.

The previous prime is 20441420089. The next prime is 20441420147. The reversal of 20441420137 is 73102414402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20347310736 + 94109401 = 142644^2 + 9701^2 .

It is a cyclic number.

It is not a de Polignac number, because 20441420137 - 2¹¹ = 20441418089 is a prime.

It is not a weakly prime, because it can be changed into another prime (20441420147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220710068 + 10220710069.

It is an arithmetic number, because the mean of its divisors is an integer number (10220710069).

Almost surely, 2^20441420137 is an apocalyptic number.

It is an amenable number.

20441420137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441420137 is an equidigital number, since it uses as much as digits as its factorization.

20441420137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 20441420137 its reverse (73102414402), we get a palindrome (93543834539).

The spelling of 20441420137 in words is "twenty billion, four hundred forty-one million, four hundred twenty thousand, one hundred thirty-seven".