12796350505 has 4 divisors (see below), whose sum is σ = 15355620612. Its totient is φ = 10237080400.

The previous prime is 12796350473. The next prime is 12796350563. The reversal of 12796350505 is 50505369721.

12796350505 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, and also an emirpimes, since its reverse is a distinct semiprime: 50505369721 = 157 ⋅321690253.

It can be written as a sum of positive squares in 2 ways, for example, as 2802749481 + 9993601024 = 52941^2 + 99968^2 .

It is not a de Polignac number, because 12796350505 - 2⁵ = 12796350473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 1279635046 + ... + 1279635055.

It is an arithmetic number, because the mean of its divisors is an integer number (3838905153).

Almost surely, 2^12796350505 is an apocalyptic number.

It is an amenable number.

12796350505 is a deficient number, since it is larger than the sum of its proper divisors (2559270107).

12796350505 is an equidigital number, since it uses as much as digits as its factorization.

12796350505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559270106.

The product of its (nonzero) digits is 283500, while the sum is 43.

The spelling of 12796350505 in words is "twelve billion, seven hundred ninety-six million, three hundred fifty thousand, five hundred five".