12889543536 has 60 divisors (see below), whose sum is σ = 36281403288. Its totient is φ = 4271670912.

The previous prime is 12889543523. The next prime is 12889543559. The reversal of 12889543536 is 63534598821.

12889543536 is a `hidden beast` number, since 1 + 28 + 89 + 5 + 4 + 3 + 536 = 666.

It is a super-2 number, since 2×12889543536² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233790 + ... + 283613.

Almost surely, 2^12889543536 is an apocalyptic number.

12889543536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12889543536 is an abundant number, since it is smaller than the sum of its proper divisors (23391859752).

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

12889543536 is a wasteful number, since it uses less digits than its factorization.

12889543536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517590 (or 517581 counting only the distinct ones).

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

The spelling of 12889543536 in words is "twelve billion, eight hundred eighty-nine million, five hundred forty-three thousand, five hundred thirty-six".