12992474509 has 6 divisors (see below), whose sum is σ = 15113694894. Its totient is φ = 11136406680.

The previous prime is 12992474501. The next prime is 12992474533. The reversal of 12992474509 is 90547429921.

12992474509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7743472009 + 5249002500 = 87997^2 + 72450^2 .

It is not a de Polignac number, because 12992474509 - 2³ = 12992474501 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 (12992474501) 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 5 ways as a sum of consecutive naturals, for example, 132576222 + ... + 132576319.

It is an arithmetic number, because the mean of its divisors is an integer number (2518949149).

Almost surely, 2^12992474509 is an apocalyptic number.

It is an amenable number.

12992474509 is a deficient number, since it is larger than the sum of its proper divisors (2121220385).

12992474509 is an equidigital number, since it uses as much as digits as its factorization.

12992474509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265152555 (or 265152548 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 12992474509 in words is "twelve billion, nine hundred ninety-two million, four hundred seventy-four thousand, five hundred nine".