41441821665 has 16 divisors (see below), whose sum is σ = 66487596288. Its totient is φ = 22042077696.

The previous prime is 41441821661. The next prime is 41441821679. The reversal of 41441821665 is 56612814414.

It is not a de Polignac number, because 41441821665 - 2² = 41441821661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41441821661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3758512 + ... + 3769521.

It is an arithmetic number, because the mean of its divisors is an integer number (4155474768).

Almost surely, 2^41441821665 is an apocalyptic number.

It is an amenable number.

41441821665 is a deficient number, since it is larger than the sum of its proper divisors (25045774623).

41441821665 is a wasteful number, since it uses less digits than its factorization.

41441821665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7528408.

The product of its digits is 184320, while the sum is 42.

The spelling of 41441821665 in words is "forty-one billion, four hundred forty-one million, eight hundred twenty-one thousand, six hundred sixty-five".