12811601688 has 16 divisors (see below), whose sum is σ = 32029004280. Its totient is φ = 4270533888.

The previous prime is 12811601687. The next prime is 12811601707. The reversal of 12811601688 is 88610611821.

12811601688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811601683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266908345 + ... + 266908392.

Almost surely, 2^12811601688 is an apocalyptic number.

It is an amenable number.

12811601688 is an abundant number, since it is smaller than the sum of its proper divisors (19217402592).

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

12811601688 is a wasteful number, since it uses less digits than its factorization.

12811601688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533816746 (or 533816742 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 42.

The spelling of 12811601688 in words is "twelve billion, eight hundred eleven million, six hundred one thousand, six hundred eighty-eight".