12689339791412 has 24 divisors (see below), whose sum is σ = 23596274971080. Its totient is φ = 5950203284480.

The previous prime is 12689339791411. The next prime is 12689339791483. The reversal of 12689339791412 is 21419793398621.

It can be written as a sum of positive squares in 4 ways, for example, as 1432268007076 + 11257071784336 = 1196774^2 + 3355156^2 .

It is a super-2 number, since 2×12689339791412² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689339791411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332023487 + ... + 332061702.

It is an arithmetic number, because the mean of its divisors is an integer number (983178123795).

Almost surely, 2^{12689339791412} is an apocalyptic number.

It is an amenable number.

12689339791412 is a deficient number, since it is larger than the sum of its proper divisors (10906935179668).

12689339791412 is a wasteful number, since it uses less digits than its factorization.

12689339791412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664085491 (or 664085489 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 65.

The spelling of 12689339791412 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-nine million, seven hundred ninety-one thousand, four hundred twelve".