12909443804412 has 96 divisors (see below), whose sum is σ = 31042684233792. Its totient is φ = 4173763915776.

The previous prime is 12909443804393. The next prime is 12909443804417. The reversal of 12909443804412 is 21440834490921.

It is a super-3 number, since 3×12909443804412³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909443804417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19342708 + ... + 19998980.

It is an arithmetic number, because the mean of its divisors is an integer number (323361294102).

Almost surely, 2^{12909443804412} is an apocalyptic number.

12909443804412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12909443804412 is an abundant number, since it is smaller than the sum of its proper divisors (18133240429380).

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

12909443804412 is a wasteful number, since it uses less digits than its factorization.

12909443804412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656687 (or 656685 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 12909443804412 in words is "twelve trillion, nine hundred nine billion, four hundred forty-three million, eight hundred four thousand, four hundred twelve".