12724288105812 has 48 divisors (see below), whose sum is σ = 32803279834752. Its totient is φ = 3818371194880.

The previous prime is 12724288105783. The next prime is 12724288105813. The reversal of 12724288105812 is 21850188242721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724288105813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1355950989 + ... + 1355960372.

It is an arithmetic number, because the mean of its divisors is an integer number (683401663224).

Almost surely, 2^{12724288105812} is an apocalyptic number.

12724288105812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12724288105812 is an abundant number, since it is smaller than the sum of its proper divisors (20078991728940).

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

12724288105812 is a wasteful number, since it uses less digits than its factorization.

12724288105812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711911408 (or 2711911406 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 51.

The spelling of 12724288105812 in words is "twelve trillion, seven hundred twenty-four billion, two hundred eighty-eight million, one hundred five thousand, eight hundred twelve".