12688926380 has 96 divisors (see below), whose sum is σ = 29059430400. Its totient is φ = 4626171648.

The previous prime is 12688926377. The next prime is 12688926401. The reversal of 12688926380 is 8362988621.

12688926380 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-2 number, since 2×12688926380² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 17647661 + ... + 17648379.

It is an arithmetic number, because the mean of its divisors is an integer number (302702400).

Almost surely, 2^12688926380 is an apocalyptic number.

12688926380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12688926380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14529715200).

12688926380 is an abundant number, since it is smaller than the sum of its proper divisors (16370504020).

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

12688926380 is a wasteful number, since it uses less digits than its factorization.

12688926380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 12688926380 in words is "twelve billion, six hundred eighty-eight million, nine hundred twenty-six thousand, three hundred eighty".