8556559340 has 144 divisors (see below), whose sum is σ = 22256156160. Its totient is φ = 2745630720.

The previous prime is 8556559307. The next prime is 8556559373. The reversal of 8556559340 is 439556558.

It is an interprime number because it is at equal distance from previous prime (8556559307) and next prime (8556559373).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3180716 + ... + 3183404.

It is an arithmetic number, because the mean of its divisors is an integer number (154556640).

Almost surely, 2^8556559340 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 8556559340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11128078080).

8556559340 is an abundant number, since it is smaller than the sum of its proper divisors (13699596820).

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

8556559340 is a wasteful number, since it uses less digits than its factorization.

8556559340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 50.

The square root of 8556559340 is about 92501.6720929952. The cubic root of 8556559340 is about 2045.3441306079.

The spelling of 8556559340 in words is "eight billion, five hundred fifty-six million, five hundred fifty-nine thousand, three hundred forty".