12323122440 has 64 divisors (see below), whose sum is σ = 37027272960. Its totient is φ = 3281018880.

The previous prime is 12323122439. The next prime is 12323122457. The reversal of 12323122440 is 4422132321.

It is a happy number.

12323122440 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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12323122440.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3184 + ... + 157023.

It is an arithmetic number, because the mean of its divisors is an integer number (578551140).

Almost surely, 2^12323122440 is an apocalyptic number.

12323122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12323122440 is an abundant number, since it is smaller than the sum of its proper divisors (24704150520).

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

12323122440 is a wasteful number, since it uses less digits than its factorization.

12323122440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160862 (or 160858 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12323122440 its reverse (4422132321), we get a palindrome (16745254761).

The spelling of 12323122440 in words is "twelve billion, three hundred twenty-three million, one hundred twenty-two thousand, four hundred forty".