12701635613 has 4 divisors (see below), whose sum is σ = 13044923100. Its totient is φ = 12358348128.

The previous prime is 12701635601. The next prime is 12701635691. The reversal of 12701635613 is 31653610721.

12701635613 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: 31653610721 = 30871 ⋅1025351.

It can be written as a sum of positive squares in 2 ways, for example, as 6609364804 + 6092270809 = 81298^2 + 78053^2 .

It is a cyclic number.

It is not a de Polignac number, because 12701635613 - 2²⁰ = 12700587037 is a prime.

It is a super-2 number, since 2×12701635613² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12701635693) 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 3 ways as a sum of consecutive naturals, for example, 171643688 + ... + 171643761.

It is an arithmetic number, because the mean of its divisors is an integer number (3261230775).

Almost surely, 2^12701635613 is an apocalyptic number.

It is an amenable number.

12701635613 is a deficient number, since it is larger than the sum of its proper divisors (343287487).

12701635613 is an equidigital number, since it uses as much as digits as its factorization.

12701635613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343287486.

The product of its (nonzero) digits is 22680, while the sum is 35.

The spelling of 12701635613 in words is "twelve billion, seven hundred one million, six hundred thirty-five thousand, six hundred thirteen".