6566123322 has 144 divisors (see below), whose sum is σ = 16634086560. Its totient is φ = 1865160000.

The previous prime is 6566123273. The next prime is 6566123323. The reversal of 6566123322 is 2233216656.

6566123322 is a `hidden beast` number, since 6 + 5 + 6 + 612 + 3 + 32 + 2 = 666.

It is a super-2 number, since 2×6566123322² = 86227950959424631368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6566123323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4178797 + ... + 4180367.

It is an arithmetic number, because the mean of its divisors is an integer number (115514490).

Almost surely, 2^6566123322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6566123322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8317043280).

6566123322 is an abundant number, since it is smaller than the sum of its proper divisors (10067963238).

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

6566123322 is a wasteful number, since it uses less digits than its factorization.

6566123322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721 (or 1707 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 6566123322 is about 81031.6192729727. The cubic root of 6566123322 is about 1872.5625997089.

Adding to 6566123322 its reverse (2233216656), we get a palindrome (8799339978).

The spelling of 6566123322 in words is "six billion, five hundred sixty-six million, one hundred twenty-three thousand, three hundred twenty-two".