12724755891 has 8 divisors (see below), whose sum is σ = 17005526160. Its totient is φ = 8463578112.

The previous prime is 12724755887. The next prime is 12724755899. The reversal of 12724755891 is 19855742721.

It is a happy number.

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

It is not a de Polignac number, because 12724755891 - 2² = 12724755887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12724755899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4896606 + ... + 4899203.

It is an arithmetic number, because the mean of its divisors is an integer number (2125690770).

Almost surely, 2^12724755891 is an apocalyptic number.

12724755891 is a deficient number, since it is larger than the sum of its proper divisors (4280770269).

12724755891 is an equidigital number, since it uses as much as digits as its factorization.

12724755891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9796245.

The product of its digits is 1411200, while the sum is 51.

The spelling of 12724755891 in words is "twelve billion, seven hundred twenty-four million, seven hundred fifty-five thousand, eight hundred ninety-one".