404543665841 has 4 divisors (see below), whose sum is σ = 462335618112. Its totient is φ = 346751713572.

The previous prime is 404543665837. The next prime is 404543665873. The reversal of 404543665841 is 148566345404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404543665841 - 2² = 404543665837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 404543665841.

It is not an unprimeable number, because it can be changed into a prime (404543665831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28895976125 + ... + 28895976138.

It is an arithmetic number, because the mean of its divisors is an integer number (115583904528).

Almost surely, 2^404543665841 is an apocalyptic number.

It is an amenable number.

404543665841 is a deficient number, since it is larger than the sum of its proper divisors (57791952271).

404543665841 is an equidigital number, since it uses as much as digits as its factorization.

404543665841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57791952270.

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 404543665841 in words is "four hundred four billion, five hundred forty-three million, six hundred sixty-five thousand, eight hundred forty-one".