12681546912 has 36 divisors (see below), whose sum is σ = 36063149850. Its totient is φ = 4227182208.

The previous prime is 12681546887. The next prime is 12681546923. The reversal of 12681546912 is 21964518621.

12681546912 is a `hidden beast` number, since 1 + 26 + 81 + 546 + 9 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7265175696 + 5416371216 = 85236^2 + 73596^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22016287 + ... + 22016862.

Almost surely, 2^12681546912 is an apocalyptic number.

12681546912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12681546912 is an abundant number, since it is smaller than the sum of its proper divisors (23381602938).

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

12681546912 is a wasteful number, since it uses less digits than its factorization.

12681546912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44033165 (or 44033154 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 12681546912 in words is "twelve billion, six hundred eighty-one million, five hundred forty-six thousand, nine hundred twelve".