20441130255487 has 2 divisors, whose sum is σ = 20441130255488. Its totient is φ = 20441130255486.

The previous prime is 20441130255479. The next prime is 20441130255499. The reversal of 20441130255487 is 78455203114402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20441130255487 - 2³ = 20441130255479 is a prime.

It is a super-2 number, since 2×20441130255487² (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 (20441130255437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220565127743 + 10220565127744.

It is an arithmetic number, because the mean of its divisors is an integer number (10220565127744).

Almost surely, 2^{20441130255487} is an apocalyptic number.

20441130255487 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441130255487 is an equidigital number, since it uses as much as digits as its factorization.

20441130255487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1075200, while the sum is 46.

Adding to 20441130255487 its reverse (78455203114402), we get a palindrome (98896333369889).

The spelling of 20441130255487 in words is "twenty trillion, four hundred forty-one billion, one hundred thirty million, two hundred fifty-five thousand, four hundred eighty-seven".