12448744784421 has 24 divisors (see below), whose sum is σ = 18245028503520. Its totient is φ = 7544451018720.

The previous prime is 12448744784419. The next prime is 12448744784449.

12448744784421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12448744784421 - 2¹ = 12448744784419 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12448744704421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11081295 + ... + 12152883.

It is an arithmetic number, because the mean of its divisors is an integer number (760209520980).

Almost surely, 2^{12448744784421} is an apocalyptic number.

12448744784421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12448744784421 is a deficient number, since it is larger than the sum of its proper divisors (5796283719099).

12448744784421 is a wasteful number, since it uses less digits than its factorization.

12448744784421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103617 (or 1103606 counting only the distinct ones).

The product of its digits is 51380224, while the sum is 60.

The spelling of 12448744784421 in words is "twelve trillion, four hundred forty-eight billion, seven hundred forty-four million, seven hundred eighty-four thousand, four hundred twenty-one".