6563544912 has 80 divisors (see below), whose sum is σ = 18988308480. Its totient is φ = 2170603008.

The previous prime is 6563544853. The next prime is 6563544947. The reversal of 6563544912 is 2194453656.

6563544912 is a `hidden beast` number, since 6 + 5 + 635 + 4 + 4 + 9 + 1 + 2 = 666.

It is a super-4 number, since 4×6563544912⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4953 + ... + 114680.

It is an arithmetic number, because the mean of its divisors is an integer number (237353856).

Almost surely, 2^6563544912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6563544912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9494154240).

6563544912 is an abundant number, since it is smaller than the sum of its proper divisors (12424763568).

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

6563544912 is a wasteful number, since it uses less digits than its factorization.

6563544912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119777 (or 119765 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 6563544912 is about 81015.7078102759. The cubic root of 6563544912 is about 1872.3174593105.

The spelling of 6563544912 in words is "six billion, five hundred sixty-three million, five hundred forty-four thousand, nine hundred twelve".