12840279875220 has 384 divisors, whose sum is σ = 42798416855040. Its totient is φ = 2814641602560.

The previous prime is 12840279875201. The next prime is 12840279875233. The reversal of 12840279875220 is 2257897204821.

It is a happy number.

12840279875220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 660872466 + ... + 660891894.

It is an arithmetic number, because the mean of its divisors is an integer number (111454210560).

Almost surely, 2^{12840279875220} is an apocalyptic number.

12840279875220 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 12840279875220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21399208427520).

12840279875220 is an abundant number, since it is smaller than the sum of its proper divisors (29958136979820).

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

12840279875220 is a wasteful number, since it uses less digits than its factorization.

12840279875220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19935 (or 19933 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 12840279875220 in words is "twelve trillion, eight hundred forty billion, two hundred seventy-nine million, eight hundred seventy-five thousand, two hundred twenty".