8653443568 has 80 divisors (see below), whose sum is σ = 20928017664. Its totient is φ = 3367457280.

The previous prime is 8653443563. The next prime is 8653443569.

8653443568 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8653443563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1162996 + ... + 1170412.

Almost surely, 2^8653443568 is an apocalyptic number.

8653443568 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8653443568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10464008832).

8653443568 is an abundant number, since it is smaller than the sum of its proper divisors (12274574096).

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

8653443568 is a wasteful number, since it uses less digits than its factorization.

8653443568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8390 (or 8384 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The square root of 8653443568 is about 93023.8870828348. The cubic root of 8653443568 is about 2053.0348519960.

The spelling of 8653443568 in words is "eight billion, six hundred fifty-three million, four hundred forty-three thousand, five hundred sixty-eight".