12438112152 has 32 divisors (see below), whose sum is σ = 32924415600. Its totient is φ = 3902152704.

The previous prime is 12438112121. The next prime is 12438112163. The reversal of 12438112152 is 25121183421.

It is a happy number.

It is a super-2 number, since 2×12438112152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15242377 + ... + 15243192.

Almost surely, 2^12438112152 is an apocalyptic number.

12438112152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12438112152 is an abundant number, since it is smaller than the sum of its proper divisors (20486303448).

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

12438112152 is a wasteful number, since it uses less digits than its factorization.

12438112152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30485595 (or 30485591 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

Adding to 12438112152 its reverse (25121183421), we get a palindrome (37559295573).

The spelling of 12438112152 in words is "twelve billion, four hundred thirty-eight million, one hundred twelve thousand, one hundred fifty-two".