12688651488 has 96 divisors (see below), whose sum is σ = 35415636480. Its totient is φ = 3963975680.

The previous prime is 12688651457. The next prime is 12688651501. The reversal of 12688651488 is 88415688621.

12688651488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×12688651488² (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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373783 + ... + 406313.

It is an arithmetic number, because the mean of its divisors is an integer number (368912880).

Almost surely, 2^12688651488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12688651488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17707818240).

12688651488 is an abundant number, since it is smaller than the sum of its proper divisors (22726984992).

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

12688651488 is a wasteful number, since it uses less digits than its factorization.

12688651488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32800 (or 32792 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 57.

The spelling of 12688651488 in words is "twelve billion, six hundred eighty-eight million, six hundred fifty-one thousand, four hundred eighty-eight".