12789858816 has 480 divisors, whose sum is σ = 45578332800. Its totient is φ = 3370844160.

The previous prime is 12789858799. The next prime is 12789858839. The reversal of 12789858816 is 61885898721.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25127170 + ... + 25127678.

It is an arithmetic number, because the mean of its divisors is an integer number (94954860).

Almost surely, 2^12789858816 is an apocalyptic number.

12789858816 is a gapful number since it is divisible by the number (16) 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 12789858816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22789166400).

12789858816 is an abundant number, since it is smaller than the sum of its proper divisors (32788473984).

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

12789858816 is a wasteful number, since it uses less digits than its factorization.

12789858816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 581 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 63.

The spelling of 12789858816 in words is "twelve billion, seven hundred eighty-nine million, eight hundred fifty-eight thousand, eight hundred sixteen".