12866750500 has 48 divisors (see below), whose sum is σ = 28143473904. Its totient is φ = 5138918400.

The previous prime is 12866750497. The next prime is 12866750513. The reversal of 12866750500 is 505766821.

12866750500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 5202448384 + 7664302116 = 72128^2 + 87546^2 .

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, 317382 + ... + 355618.

It is an arithmetic number, because the mean of its divisors is an integer number (586322373).

Almost surely, 2^12866750500 is an apocalyptic number.

12866750500 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 12866750500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14071736952).

12866750500 is an abundant number, since it is smaller than the sum of its proper divisors (15276723404).

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

12866750500 is a wasteful number, since it uses less digits than its factorization.

12866750500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38929 (or 38917 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 12866750500 in words is "twelve billion, eight hundred sixty-six million, seven hundred fifty thousand, five hundred".