12631320528 has 20 divisors (see below), whose sum is σ = 32630911488. Its totient is φ = 4210440160.

The previous prime is 12631320523. The next prime is 12631320571. The reversal of 12631320528 is 82502313621.

12631320528 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 (12631320521) 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, 131576208 + ... + 131576303.

Almost surely, 2^12631320528 is an apocalyptic number.

It is an amenable number.

12631320528 is an abundant number, since it is smaller than the sum of its proper divisors (19999590960).

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

12631320528 is a wasteful number, since it uses less digits than its factorization.

12631320528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263152522 (or 263152516 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 12631320528 in words is "twelve billion, six hundred thirty-one million, three hundred twenty thousand, five hundred twenty-eight".