12613626205 has 4 divisors (see below), whose sum is σ = 15136351452. Its totient is φ = 10090900960.

The previous prime is 12613626163. The next prime is 12613626211. The reversal of 12613626205 is 50262631621.

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 7677439641 + 4936186564 = 87621^2 + 70258^2 .

It is not a de Polignac number, because 12613626205 - 2²³ = 12605237597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1261362616 + ... + 1261362625.

It is an arithmetic number, because the mean of its divisors is an integer number (3784087863).

Almost surely, 2^12613626205 is an apocalyptic number.

It is an amenable number.

12613626205 is a deficient number, since it is larger than the sum of its proper divisors (2522725247).

12613626205 is an equidigital number, since it uses as much as digits as its factorization.

12613626205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522725246.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 12613626205 in words is "twelve billion, six hundred thirteen million, six hundred twenty-six thousand, two hundred five".