12138384384 has 352 divisors, whose sum is σ = 43258841600. Its totient is φ = 3284582400.

The previous prime is 12138384371. The next prime is 12138384409. The reversal of 12138384384 is 48348383121.

It is a nude number because it is divisible by every one of its digits.

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, 3675534 + ... + 3678834.

Almost surely, 2^12138384384 is an apocalyptic number.

12138384384 is a gapful number since it is divisible by the number (14) 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 12138384384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21629420800).

12138384384 is an abundant number, since it is smaller than the sum of its proper divisors (31120457216).

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

12138384384 is a wasteful number, since it uses less digits than its factorization.

12138384384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356 (or 3332 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The spelling of 12138384384 in words is "twelve billion, one hundred thirty-eight million, three hundred eighty-four thousand, three hundred eighty-four".