6600660120012 has 144 divisors (see below), whose sum is σ = 18294085202400. Its totient is φ = 1846489817088.

The previous prime is 6600660119947. The next prime is 6600660120017. The reversal of 6600660120012 is 2100210660066.

It is not an unprimeable number, because it can be changed into a prime (6600660120017) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5319364 + ... + 6441812.

It is an arithmetic number, because the mean of its divisors is an integer number (127042258350).

Almost surely, 2^{6600660120012} 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 6600660120012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9147042601200).

6600660120012 is an abundant number, since it is smaller than the sum of its proper divisors (11693425082388).

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

6600660120012 is a wasteful number, since it uses less digits than its factorization.

6600660120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122680 (or 1122671 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 6600660120012 its reverse (2100210660066), we get a palindrome (8700870780078).

The spelling of 6600660120012 in words is "six trillion, six hundred billion, six hundred sixty million, one hundred twenty thousand, twelve".