12981742911 has 20 divisors (see below), whose sum is σ = 19489954000. Its totient is φ = 8610994656.

The previous prime is 12981742847. The next prime is 12981742927. The reversal of 12981742911 is 11924718921.

12981742911 is a `hidden beast` number, since 1 + 298 + 1 + 74 + 291 + 1 = 666.

It is not a de Polignac number, because 12981742911 - 2⁶ = 12981742847 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 (12981752911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 386566 + ... + 418803.

It is an arithmetic number, because the mean of its divisors is an integer number (974497700).

Almost surely, 2^12981742911 is an apocalyptic number.

12981742911 is a deficient number, since it is larger than the sum of its proper divisors (6508211089).

12981742911 is an equidigital number, since it uses as much as digits as its factorization.

12981742911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805580 (or 805571 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The spelling of 12981742911 in words is "twelve billion, nine hundred eighty-one million, seven hundred forty-two thousand, nine hundred eleven".