6646122112 has 64 divisors (see below), whose sum is σ = 15323500800. Its totient is φ = 2812253184.

The previous prime is 6646122107. The next prime is 6646122127. The reversal of 6646122112 is 2112216466.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23838 + ... + 117730.

It is an arithmetic number, because the mean of its divisors is an integer number (239429700).

Almost surely, 2^6646122112 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 6646122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7661750400).

6646122112 is an abundant number, since it is smaller than the sum of its proper divisors (8677378688).

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

6646122112 is an equidigital number, since it uses as much as digits as its factorization.

6646122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93993 (or 93981 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 6646122112 is about 81523.7518273049. The cubic root of 6646122112 is about 1880.1367517847.

Adding to 6646122112 its reverse (2112216466), we get a palindrome (8758338578).

The spelling of 6646122112 in words is "six billion, six hundred forty-six million, one hundred twenty-two thousand, one hundred twelve".