663284638812 has 24 divisors (see below), whose sum is σ = 1552256641936. Its totient is φ = 220438810368.

The previous prime is 663284638771. The next prime is 663284638937. The reversal of 663284638812 is 218836482366.

663284638812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82004443 + ... + 82012530.

Almost surely, 2^663284638812 is an apocalyptic number.

It is an amenable number.

663284638812 is an abundant number, since it is smaller than the sum of its proper divisors (888972003124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663284638812 is a wasteful number, since it uses less digits than its factorization.

663284638812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164017317 (or 164017315 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 57.

The spelling of 663284638812 in words is "six hundred sixty-three billion, two hundred eighty-four million, six hundred thirty-eight thousand, eight hundred twelve".