12775076605 has 4 divisors (see below), whose sum is σ = 15330091932. Its totient is φ = 10220061280.

The previous prime is 12775076603. The next prime is 12775076623. The reversal of 12775076605 is 50667057721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8476700761 + 4298375844 = 92069^2 + 65562^2 .

It is not a de Polignac number, because 12775076605 - 2¹ = 12775076603 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 (12775076603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277507656 + ... + 1277507665.

It is an arithmetic number, because the mean of its divisors is an integer number (3832522983).

Almost surely, 2^12775076605 is an apocalyptic number.

It is an amenable number.

12775076605 is a deficient number, since it is larger than the sum of its proper divisors (2555015327).

12775076605 is an equidigital number, since it uses as much as digits as its factorization.

12775076605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555015326.

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 12775076605 in words is "twelve billion, seven hundred seventy-five million, seventy-six thousand, six hundred five".