442717643686 has 16 divisors (see below), whose sum is σ = 665345295360. Its totient is φ = 220936221000.

The previous prime is 442717643663. The next prime is 442717643689. The reversal of 442717643686 is 686346717244.

It is a self number, because there is not a number n which added to its sum of digits gives 442717643686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442717643689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2539635 + ... + 2708353.

It is an arithmetic number, because the mean of its divisors is an integer number (41584080960).

Almost surely, 2^442717643686 is an apocalyptic number.

442717643686 is a deficient number, since it is larger than the sum of its proper divisors (222627651674).

442717643686 is a wasteful number, since it uses less digits than its factorization.

442717643686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171219.

The product of its digits is 32514048, while the sum is 58.

The spelling of 442717643686 in words is "four hundred forty-two billion, seven hundred seventeen million, six hundred forty-three thousand, six hundred eighty-six".