12445421413 has 8 divisors (see below), whose sum is σ = 12493731096. Its totient is φ = 12397152000.

The previous prime is 12445421399. The next prime is 12445421419. The reversal of 12445421413 is 31412454421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2636103649 + 9809317764 = 51343^2 + 99042^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12445421413 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 (12445421419) 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 7 ways as a sum of consecutive naturals, for example, 706513 + ... + 723913.

It is an arithmetic number, because the mean of its divisors is an integer number (1561716387).

Almost surely, 2^12445421413 is an apocalyptic number.

It is an amenable number.

12445421413 is a deficient number, since it is larger than the sum of its proper divisors (48309683).

12445421413 is a wasteful number, since it uses less digits than its factorization.

12445421413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20135.

The product of its digits is 15360, while the sum is 31.

Adding to 12445421413 its reverse (31412454421), we get a palindrome (43857875834).

The spelling of 12445421413 in words is "twelve billion, four hundred forty-five million, four hundred twenty-one thousand, four hundred thirteen".