12445222415 has 4 divisors (see below), whose sum is σ = 14934266904. Its totient is φ = 9956177928.

The previous prime is 12445222409. The next prime is 12445222417. The reversal of 12445222415 is 51422254421.

12445222415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12445222415 - 2²⁴ = 12428445199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445222417) 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 3 ways as a sum of consecutive naturals, for example, 1244522237 + ... + 1244522246.

It is an arithmetic number, because the mean of its divisors is an integer number (3733566726).

Almost surely, 2^12445222415 is an apocalyptic number.

12445222415 is a deficient number, since it is larger than the sum of its proper divisors (2489044489).

12445222415 is an equidigital number, since it uses as much as digits as its factorization.

12445222415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489044488.

The product of its digits is 25600, while the sum is 32.

Adding to 12445222415 its reverse (51422254421), we get a palindrome (63867476836).

The spelling of 12445222415 in words is "twelve billion, four hundred forty-five million, two hundred twenty-two thousand, four hundred fifteen".