20441264587 has 2 divisors, whose sum is σ = 20441264588. Its totient is φ = 20441264586.

The previous prime is 20441264521. The next prime is 20441264647. The reversal of 20441264587 is 78546214402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20441264587 is a prime.

It is not a weakly prime, because it can be changed into another prime (20441264687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220632293 + 10220632294.

It is an arithmetic number, because the mean of its divisors is an integer number (10220632294).

Almost surely, 2^20441264587 is an apocalyptic number.

20441264587 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441264587 is an equidigital number, since it uses as much as digits as its factorization.

20441264587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 43.

Adding to 20441264587 its reverse (78546214402), we get a palindrome (98987478989).

The spelling of 20441264587 in words is "twenty billion, four hundred forty-one million, two hundred sixty-four thousand, five hundred eighty-seven".