12927491911 has 4 divisors (see below), whose sum is σ = 12928958712. Its totient is φ = 12926025112.

The previous prime is 12927491891. The next prime is 12927491953. The reversal of 12927491911 is 11919472921.

It is a happy number.

12927491911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12927491911 - 2⁹ = 12927491399 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 (12927492911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720100 + ... + 737833.

It is an arithmetic number, because the mean of its divisors is an integer number (3232239678).

Almost surely, 2^12927491911 is an apocalyptic number.

12927491911 is a deficient number, since it is larger than the sum of its proper divisors (1466801).

12927491911 is an equidigital number, since it uses as much as digits as its factorization.

12927491911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466800.

The product of its digits is 81648, while the sum is 46.

The spelling of 12927491911 in words is "twelve billion, nine hundred twenty-seven million, four hundred ninety-one thousand, nine hundred eleven".