8556840534 has 64 divisors (see below), whose sum is σ = 19291281408. Its totient is φ = 2506790400.

The previous prime is 8556840529. The next prime is 8556840553. The reversal of 8556840534 is 4350486558.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3176092 + ... + 3178784.

It is an arithmetic number, because the mean of its divisors is an integer number (301426272).

Almost surely, 2^8556840534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8556840534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9645640704).

8556840534 is an abundant number, since it is smaller than the sum of its proper divisors (10734440874).

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

8556840534 is a wasteful number, since it uses less digits than its factorization.

8556840534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293.

The product of its (nonzero) digits is 2304000, while the sum is 48.

The square root of 8556840534 is about 92503.1920206000. The cubic root of 8556840534 is about 2045.3665357272.

The spelling of 8556840534 in words is "eight billion, five hundred fifty-six million, eight hundred forty thousand, five hundred thirty-four".