6559212168 has 160 divisors (see below), whose sum is σ = 18681330360. Its totient is φ = 2149908480.

The previous prime is 6559212161. The next prime is 6559212211. The reversal of 6559212168 is 8612129556.

It can be written as a sum of positive squares in 4 ways, for example, as 5006694564 + 1552517604 = 70758^2 + 39402^2 .

It is not an unprimeable number, because it can be changed into a prime (6559212161) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15148080 + ... + 15148512.

Almost surely, 2^6559212168 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 6559212168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9340665180).

6559212168 is an abundant number, since it is smaller than the sum of its proper divisors (12122118192).

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

6559212168 is a wasteful number, since it uses less digits than its factorization.

6559212168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 776 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 6559212168 is about 80988.9632480871. The cubic root of 6559212168 is about 1871.9053822986.

The spelling of 6559212168 in words is "six billion, five hundred fifty-nine million, two hundred twelve thousand, one hundred sixty-eight".