12279648447 has 24 divisors (see below), whose sum is σ = 19358696448. Its totient is φ = 7438770000.

The previous prime is 12279648427. The next prime is 12279648449. The reversal of 12279648447 is 74484697221.

12279648447 is a `hidden beast` number, since 12 + 27 + 96 + 484 + 47 = 666.

It is not a de Polignac number, because 12279648447 - 2¹¹ = 12279646399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12279648393 and 12279648402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12279648449) 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, 195298 + ... + 250400.

It is an arithmetic number, because the mean of its divisors is an integer number (806612352).

Almost surely, 2^12279648447 is an apocalyptic number.

12279648447 is a deficient number, since it is larger than the sum of its proper divisors (7079048001).

12279648447 is a wasteful number, since it uses less digits than its factorization.

12279648447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57371 (or 57368 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The spelling of 12279648447 in words is "twelve billion, two hundred seventy-nine million, six hundred forty-eight thousand, four hundred forty-seven".