8356559616 has 144 divisors (see below), whose sum is σ = 24944976000. Its totient is φ = 2759242752.

The previous prime is 8356559599. The next prime is 8356559647. The reversal of 8356559616 is 6169556538.

It is a happy number.

8356559616 is a `hidden beast` number, since 8 + 35 + 6 + 5 + 596 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 15 ways as a sum of consecutive naturals, for example, 733935 + ... + 745233.

It is an arithmetic number, because the mean of its divisors is an integer number (173229000).

Almost surely, 2^8356559616 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 8356559616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12472488000).

8356559616 is an abundant number, since it is smaller than the sum of its proper divisors (16588416384).

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

8356559616 is a wasteful number, since it uses less digits than its factorization.

8356559616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431 (or 11411 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The square root of 8356559616 is about 91414.2199879209. The cubic root of 8356559616 is about 2029.2824772097.

The spelling of 8356559616 in words is "eight billion, three hundred fifty-six million, five hundred fifty-nine thousand, six hundred sixteen".