12691227352 has 32 divisors (see below), whose sum is σ = 24033776400. Its totient is φ = 6282468864.

The previous prime is 12691227349. The next prime is 12691227359. The reversal of 12691227352 is 25372219621.

12691227352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12691227352³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691227359) 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 7 ways as a sum of consecutive naturals, for example, 400108 + ... + 430660.

Almost surely, 2^12691227352 is an apocalyptic number.

It is an amenable number.

12691227352 is a deficient number, since it is larger than the sum of its proper divisors (11342549048).

12691227352 is a wasteful number, since it uses less digits than its factorization.

12691227352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31075 (or 31071 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The spelling of 12691227352 in words is "twelve billion, six hundred ninety-one million, two hundred twenty-seven thousand, three hundred fifty-two".