12943956695281 has 12 divisors (see below), whose sum is σ = 13729722096000. Its totient is φ = 12201074161848.

The previous prime is 12943956695279. The next prime is 12943956695291. The reversal of 12943956695281 is 18259665934921.

It is a happy number.

It is not a de Polignac number, because 12943956695281 - 2¹ = 12943956695279 is a prime.

It is a super-2 number, since 2×12943956695281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12943956695281.

It is not an unprimeable number, because it can be changed into a prime (12943956695291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90018201 + ... + 90161878.

It is an arithmetic number, because the mean of its divisors is an integer number (1144143508000).

Almost surely, 2^{12943956695281} is an apocalyptic number.

It is an amenable number.

12943956695281 is a deficient number, since it is larger than the sum of its proper divisors (785765400719).

12943956695281 is a wasteful number, since it uses less digits than its factorization.

12943956695281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180180316 (or 180180297 counting only the distinct ones).

The product of its digits is 251942400, while the sum is 70.

The spelling of 12943956695281 in words is "twelve trillion, nine hundred forty-three billion, nine hundred fifty-six million, six hundred ninety-five thousand, two hundred eighty-one".