12334423440 has 160 divisors (see below), whose sum is σ = 42246510336. Its totient is φ = 2961080320.

The previous prime is 12334423429. The next prime is 12334423447. The reversal of 12334423440 is 4432443321.

It is a happy number.

12334423440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12334423398 and 12334423407.

It is not an unprimeable number, because it can be changed into a prime (12334423447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28120 + ... + 159560.

Almost surely, 2^12334423440 is an apocalyptic number.

12334423440 is a gapful number since it is divisible by the number (10) 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 12334423440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21123255168).

12334423440 is an abundant number, since it is smaller than the sum of its proper divisors (29912086896).

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

12334423440 is a wasteful number, since it uses less digits than its factorization.

12334423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131497 (or 131491 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 12334423440 its reverse (4432443321), we get a palindrome (16766866761).

The spelling of 12334423440 in words is "twelve billion, three hundred thirty-four million, four hundred twenty-three thousand, four hundred forty".