12789718500 has 96 divisors (see below), whose sum is σ = 40108618368. Its totient is φ = 3148233600.

The previous prime is 12789718489. The next prime is 12789718541. The reversal of 12789718500 is 581798721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12789718500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308442 + ... + 347441.

It is an arithmetic number, because the mean of its divisors is an integer number (417798108).

Almost surely, 2^12789718500 is an apocalyptic number.

12789718500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12789718500 is an abundant number, since it is smaller than the sum of its proper divisors (27318899868).

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

12789718500 is a wasteful number, since it uses less digits than its factorization.

12789718500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655918 (or 655906 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 48.

The spelling of 12789718500 in words is "twelve billion, seven hundred eighty-nine million, seven hundred eighteen thousand, five hundred".