12781686998352 has 160 divisors (see below), whose sum is σ = 33864815477376. Its totient is φ = 4152908390400.

The previous prime is 12781686998351. The next prime is 12781686998401. The reversal of 12781686998352 is 25389968618721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781686998351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143904868 + ... + 143993660.

Almost surely, 2^{12781686998352} is an apocalyptic number.

12781686998352 is a gapful number since it is divisible by the number (12) 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 12781686998352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16932407738688).

12781686998352 is an abundant number, since it is smaller than the sum of its proper divisors (21083128479024).

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

12781686998352 is a wasteful number, since it uses less digits than its factorization.

12781686998352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89309 (or 89303 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 75.

The spelling of 12781686998352 in words is "twelve trillion, seven hundred eighty-one billion, six hundred eighty-six million, nine hundred ninety-eight thousand, three hundred fifty-two".