12689335605338 has 96 divisors (see below), whose sum is σ = 23392951464960. Its totient is φ = 5133063610080.

The previous prime is 12689335605337. The next prime is 12689335605371. The reversal of 12689335605338 is 83350653398621.

It is a super-2 number, since 2×12689335605338² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12689335605337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2247090431 + ... + 2247096077.

It is an arithmetic number, because the mean of its divisors is an integer number (243676577760).

Almost surely, 2^{12689335605338} is an apocalyptic number.

12689335605338 is a deficient number, since it is larger than the sum of its proper divisors (10703615859622).

12689335605338 is a wasteful number, since it uses less digits than its factorization.

12689335605338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9920 (or 9913 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 62.

The spelling of 12689335605338 in words is "twelve trillion, six hundred eighty-nine billion, three hundred thirty-five million, six hundred five thousand, three hundred thirty-eight".