663563320056 has 96 divisors (see below), whose sum is σ = 2211877755360. Its totient is φ = 175005709056.

The previous prime is 663563320051. The next prime is 663563320067. The reversal of 663563320056 is 650023365366.

663563320056 is a `hidden beast` number, since 6 + 6 + 3 + 5 + 633 + 2 + 0 + 0 + 5 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 663563319993 and 663563320020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663563320051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50631675 + ... + 50644778.

It is an arithmetic number, because the mean of its divisors is an integer number (23040393285).

Almost surely, 2^663563320056 is an apocalyptic number.

It is an amenable number.

663563320056 is an abundant number, since it is smaller than the sum of its proper divisors (1548314435304).

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

663563320056 is a wasteful number, since it uses less digits than its factorization.

663563320056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101276485 (or 101276478 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 45.

The spelling of 663563320056 in words is "six hundred sixty-three billion, five hundred sixty-three million, three hundred twenty thousand, fifty-six".