8609216568 has 128 divisors (see below), whose sum is σ = 23116415040. Its totient is φ = 2662400000.

The previous prime is 8609216543. The next prime is 8609216593. The reversal of 8609216568 is 8656129068.

It is an interprime number because it is at equal distance from previous prime (8609216543) and next prime (8609216593).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 8609216568.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16524148 + ... + 16524668.

Almost surely, 2^8609216568 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 8609216568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11558207520).

8609216568 is an abundant number, since it is smaller than the sum of its proper divisors (14507198472).

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

8609216568 is a wasteful number, since it uses less digits than its factorization.

8609216568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 8609216568 is about 92785.8640526670. The cubic root of 8609216568 is about 2049.5312486041.

The spelling of 8609216568 in words is "eight billion, six hundred nine million, two hundred sixteen thousand, five hundred sixty-eight".