12356322432 has 128 divisors (see below), whose sum is σ = 35019864000. Its totient is φ = 3846635520.

The previous prime is 12356322431. The next prime is 12356322439. The reversal of 12356322432 is 23422365321.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 12356322393 and 12356322402.

It is not an unprimeable number, because it can be changed into a prime (12356322431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847944 + ... + 862392.

Almost surely, 2^12356322432 is an apocalyptic number.

12356322432 is a gapful number since it is divisible by the number (12) 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 12356322432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17509932000).

12356322432 is an abundant number, since it is smaller than the sum of its proper divisors (22663541568).

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

12356322432 is a wasteful number, since it uses less digits than its factorization.

12356322432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14614 (or 14602 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

Adding to 12356322432 its reverse (23422365321), we get a palindrome (35778687753).

The spelling of 12356322432 in words is "twelve billion, three hundred fifty-six million, three hundred twenty-two thousand, four hundred thirty-two".