12800660120 has 128 divisors (see below), whose sum is σ = 31256064000. Its totient is φ = 4704099840.

The previous prime is 12800660111. The next prime is 12800660123. The reversal of 12800660120 is 2106600821.

Together with 18455403879 it forms a betrothed pair.

It is a self number, because there is not a number n which added to its sum of digits gives 12800660120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12800660123) 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 31 ways as a sum of consecutive naturals, for example, 3962666 + ... + 3965894.

It is an arithmetic number, because the mean of its divisors is an integer number (244188000).

Almost surely, 2^12800660120 is an apocalyptic number.

12800660120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12800660120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15628032000).

12800660120 is an abundant number, since it is smaller than the sum of its proper divisors (18455403880).

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

12800660120 is a wasteful number, since it uses less digits than its factorization.

12800660120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433 (or 3429 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 12800660120 in words is "twelve billion, eight hundred million, six hundred sixty thousand, one hundred twenty".