12445123413 has 4 divisors (see below), whose sum is σ = 16593497888. Its totient is φ = 8296748940.

The previous prime is 12445123409. The next prime is 12445123433. The reversal of 12445123413 is 31432154421.

12445123413 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12445123413 - 2² = 12445123409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445123433) 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, 2074187233 + ... + 2074187238.

It is an arithmetic number, because the mean of its divisors is an integer number (4148374472).

Almost surely, 2^12445123413 is an apocalyptic number.

It is an amenable number.

12445123413 is a deficient number, since it is larger than the sum of its proper divisors (4148374475).

12445123413 is an equidigital number, since it uses as much as digits as its factorization.

12445123413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148374474.

The product of its digits is 11520, while the sum is 30.

Adding to 12445123413 its reverse (31432154421), we get a palindrome (43877277834).

The spelling of 12445123413 in words is "twelve billion, four hundred forty-five million, one hundred twenty-three thousand, four hundred thirteen".