13138934635 has 4 divisors (see below), whose sum is σ = 15766721568. Its totient is φ = 10511147704.

The previous prime is 13138934609. The next prime is 13138934657. The reversal of 13138934635 is 53643983131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53643983131 = 6047 ⋅8871173.

It is a cyclic number.

It is not a de Polignac number, because 13138934635 - 2²³ = 13130546027 is a prime.

It is a Duffinian 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, 1313893459 + ... + 1313893468.

It is an arithmetic number, because the mean of its divisors is an integer number (3941680392).

Almost surely, 2^13138934635 is an apocalyptic number.

13138934635 is a deficient number, since it is larger than the sum of its proper divisors (2627786933).

13138934635 is an equidigital number, since it uses as much as digits as its factorization.

13138934635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627786932.

The product of its digits is 699840, while the sum is 46.

The spelling of 13138934635 in words is "thirteen billion, one hundred thirty-eight million, nine hundred thirty-four thousand, six hundred thirty-five".