20441004255247 has 2 divisors, whose sum is σ = 20441004255248. Its totient is φ = 20441004255246.

The previous prime is 20441004255229. The next prime is 20441004255307. The reversal of 20441004255247 is 74255240014402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20441004255247 is a prime.

It is a super-2 number, since 2×20441004255247² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20441004252247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220502127623 + 10220502127624.

It is an arithmetic number, because the mean of its divisors is an integer number (10220502127624).

Almost surely, 2^{20441004255247} is an apocalyptic number.

20441004255247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441004255247 is an equidigital number, since it uses as much as digits as its factorization.

20441004255247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 358400, while the sum is 40.

Adding to 20441004255247 its reverse (74255240014402), we get a palindrome (94696244269649).

The spelling of 20441004255247 in words is "twenty trillion, four hundred forty-one billion, four million, two hundred fifty-five thousand, two hundred forty-seven".