12689543853 has 48 divisors (see below), whose sum is σ = 21455216640. Its totient is φ = 7075851552.

The previous prime is 12689543809. The next prime is 12689543861. The reversal of 12689543853 is 35834598621.

12689543853 is a `hidden beast` number, since 12 + 6 + 8 + 9 + 543 + 85 + 3 = 666.

It is not a de Polignac number, because 12689543853 - 2²⁹ = 12152672941 is a prime.

It is a super-2 number, since 2×12689543853² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12689543853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689543873) 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, 4763800 + ... + 4766462.

It is an arithmetic number, because the mean of its divisors is an integer number (446983680).

Almost surely, 2^12689543853 is an apocalyptic number.

It is an amenable number.

12689543853 is a deficient number, since it is larger than the sum of its proper divisors (8765672787).

12689543853 is a wasteful number, since it uses less digits than its factorization.

12689543853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478 (or 4475 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 54.

The spelling of 12689543853 in words is "twelve billion, six hundred eighty-nine million, five hundred forty-three thousand, eight hundred fifty-three".