12455320224 has 24 divisors (see below), whose sum is σ = 32695215840. Its totient is φ = 4151773376.

The previous prime is 12455320219. The next prime is 12455320247. The reversal of 12455320224 is 42202355421.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 12455320191 and 12455320200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64871364 + ... + 64871555.

It is an arithmetic number, because the mean of its divisors is an integer number (1362300660).

Almost surely, 2^12455320224 is an apocalyptic number.

It is an amenable number.

12455320224 is an abundant number, since it is smaller than the sum of its proper divisors (20239895616).

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

12455320224 is a wasteful number, since it uses less digits than its factorization.

12455320224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129742932 (or 129742924 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 12455320224 its reverse (42202355421), we get a palindrome (54657675645).

The spelling of 12455320224 in words is "twelve billion, four hundred fifty-five million, three hundred twenty thousand, two hundred twenty-four".