41987585789 has 2 divisors, whose sum is σ = 41987585790. Its totient is φ = 41987585788.

The previous prime is 41987585753. The next prime is 41987585833. The reversal of 41987585789 is 98758578914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35328209764 + 6659376025 = 187958^2 + 81605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41987585789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41987585729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20993792894 + 20993792895.

It is an arithmetic number, because the mean of its divisors is an integer number (20993792895).

Almost surely, 2^41987585789 is an apocalyptic number.

It is an amenable number.

41987585789 is a deficient number, since it is larger than the sum of its proper divisors (1).

41987585789 is an equidigital number, since it uses as much as digits as its factorization.

41987585789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 203212800, while the sum is 71.

The spelling of 41987585789 in words is "forty-one billion, nine hundred eighty-seven million, five hundred eighty-five thousand, seven hundred eighty-nine".