8549556012 has 72 divisors (see below), whose sum is σ = 22394211840. Its totient is φ = 2748301920.

The previous prime is 8549555953. The next prime is 8549556023. The reversal of 8549556012 is 2106559458.

8549556012 is a `hidden beast` number, since 85 + 4 + 9 + 5 + 560 + 1 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87337 + ... + 157247.

It is an arithmetic number, because the mean of its divisors is an integer number (311030720).

Almost surely, 2^8549556012 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 8549556012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11197105920).

8549556012 is an abundant number, since it is smaller than the sum of its proper divisors (13844655828).

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

8549556012 is a wasteful number, since it uses less digits than its factorization.

8549556012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70043 (or 70038 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The square root of 8549556012 is about 92463.8092012221. The cubic root of 8549556012 is about 2044.7859574361.

The spelling of 8549556012 in words is "eight billion, five hundred forty-nine million, five hundred fifty-six thousand, twelve".