41664021859 has 2 divisors, whose sum is σ = 41664021860. Its totient is φ = 41664021858.

The previous prime is 41664021857. The next prime is 41664021877. The reversal of 41664021859 is 95812046614.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41664021859 - 2¹ = 41664021857 is a prime.

Together with 41664021857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41664021851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832010929 + 20832010930.

It is an arithmetic number, because the mean of its divisors is an integer number (20832010930).

Almost surely, 2^41664021859 is an apocalyptic number.

41664021859 is a deficient number, since it is larger than the sum of its proper divisors (1).

41664021859 is an equidigital number, since it uses as much as digits as its factorization.

41664021859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 41664021859 in words is "forty-one billion, six hundred sixty-four million, twenty-one thousand, eight hundred fifty-nine".