12243919728 has 80 divisors (see below), whose sum is σ = 33332438016. Its totient is φ = 3865171200.

The previous prime is 12243919679. The next prime is 12243919739. The reversal of 12243919728 is 82791934221.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56601 + ... + 166407.

Almost surely, 2^12243919728 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 12243919728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16666219008).

12243919728 is an abundant number, since it is smaller than the sum of its proper divisors (21088518288).

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

12243919728 is a wasteful number, since it uses less digits than its factorization.

12243919728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109942 (or 109936 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The spelling of 12243919728 in words is "twelve billion, two hundred forty-three million, nine hundred nineteen thousand, seven hundred twenty-eight".