12355434024 has 128 divisors (see below), whose sum is σ = 31909680000. Its totient is φ = 3985173504.

The previous prime is 12355434011. The next prime is 12355434031. The reversal of 12355434024 is 42043455321.

It is a Cunningham number, because it is equal to 111155²-1.

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, 33124302 + ... + 33124674.

It is an arithmetic number, because the mean of its divisors is an integer number (249294375).

Almost surely, 2^12355434024 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 12355434024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15954840000).

12355434024 is an abundant number, since it is smaller than the sum of its proper divisors (19554245976).

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

12355434024 is a wasteful number, since it uses less digits than its factorization.

12355434024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 12355434024 its reverse (42043455321), we get a palindrome (54398889345).

The spelling of 12355434024 in words is "twelve billion, three hundred fifty-five million, four hundred thirty-four thousand, twenty-four".