12658912447 has 4 divisors (see below), whose sum is σ = 12659452696. Its totient is φ = 12658372200.

The previous prime is 12658912429. The next prime is 12658912471. The reversal of 12658912447 is 74421985621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74421985621 = 41 ⋅1815170381.

It is a cyclic number.

It is not a de Polignac number, because 12658912447 - 2¹¹ = 12658910399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12658912447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12658912417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233304 + ... + 282397.

It is an arithmetic number, because the mean of its divisors is an integer number (3164863174).

Almost surely, 2^12658912447 is an apocalyptic number.

12658912447 is a deficient number, since it is larger than the sum of its proper divisors (540249).

12658912447 is an equidigital number, since it uses as much as digits as its factorization.

12658912447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540248.

The product of its digits is 967680, while the sum is 49.

The spelling of 12658912447 in words is "twelve billion, six hundred fifty-eight million, nine hundred twelve thousand, four hundred forty-seven".