12404424544 has 24 divisors (see below), whose sum is σ = 25857753768. Its totient is φ = 5837376000.

The previous prime is 12404424541. The next prime is 12404424553. The reversal of 12404424544 is 44542440421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404424541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11400582 + ... + 11401669.

It is an arithmetic number, because the mean of its divisors is an integer number (1077406407).

Almost surely, 2^12404424544 is an apocalyptic number.

It is an amenable number.

12404424544 is an abundant number, since it is smaller than the sum of its proper divisors (13453329224).

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

12404424544 is a wasteful number, since it uses less digits than its factorization.

12404424544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22802278 (or 22802270 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 34.

Adding to 12404424544 its reverse (44542440421), we get a palindrome (56946864965).

The spelling of 12404424544 in words is "twelve billion, four hundred four million, four hundred twenty-four thousand, five hundred forty-four".