404165550443 has 4 divisors (see below), whose sum is σ = 407347956480. Its totient is φ = 400983144408.

The previous prime is 404165550427. The next prime is 404165550479. The reversal of 404165550443 is 344055561404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404165550443 - 2⁴ = 404165550427 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 404165550443.

It is not an unprimeable number, because it can be changed into a prime (404165552443) 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 in 3 ways as a sum of consecutive naturals, for example, 1591202828 + ... + 1591203081.

It is an arithmetic number, because the mean of its divisors is an integer number (101836989120).

Almost surely, 2^404165550443 is an apocalyptic number.

404165550443 is a deficient number, since it is larger than the sum of its proper divisors (3182406037).

404165550443 is a wasteful number, since it uses less digits than its factorization.

404165550443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182406036.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 404165550443 in words is "four hundred four billion, one hundred sixty-five million, five hundred fifty thousand, four hundred forty-three".