663443043422 has 16 divisors (see below), whose sum is σ = 1038468280320. Its totient is φ = 317287941432.

The previous prime is 663443043421. The next prime is 663443043457. The reversal of 663443043422 is 224340344366.

663443043422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 663443043422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663443043421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1195463 + ... + 1660125.

It is an arithmetic number, because the mean of its divisors is an integer number (64904267520).

Almost surely, 2^663443043422 is an apocalyptic number.

663443043422 is a deficient number, since it is larger than the sum of its proper divisors (375025236898).

663443043422 is a wasteful number, since it uses less digits than its factorization.

663443043422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495727.

The product of its (nonzero) digits is 995328, while the sum is 41.

Adding to 663443043422 its reverse (224340344366), we get a palindrome (887783387788).

The spelling of 663443043422 in words is "six hundred sixty-three billion, four hundred forty-three million, forty-three thousand, four hundred twenty-two".