6563226223656 has 128 divisors (see below), whose sum is σ = 18666037632000. Its totient is φ = 2135618944704.

The previous prime is 6563226223643. The next prime is 6563226223711.

6563226223656 is a `hidden beast` number, since 6 + 5 + 6 + 3 + 2 + 2 + 622 + 3 + 6 + 5 + 6 = 666.

6563226223656 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15798165 + ... + 16208283.

It is an arithmetic number, because the mean of its divisors is an integer number (145828419000).

Almost surely, 2^{6563226223656} 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 6563226223656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9333018816000).

6563226223656 is an abundant number, since it is smaller than the sum of its proper divisors (12102811408344).

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

6563226223656 is a wasteful number, since it uses less digits than its factorization.

6563226223656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411900 (or 411890 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 54.

The spelling of 6563226223656 in words is "six trillion, five hundred sixty-three billion, two hundred twenty-six million, two hundred twenty-three thousand, six hundred fifty-six".