13038138727 has 4 divisors (see below), whose sum is σ = 13040205120. Its totient is φ = 13036072336.

The previous prime is 13038138691. The next prime is 13038138791. The reversal of 13038138727 is 72783183031.

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

It is a cyclic number.

It is not a de Polignac number, because 13038138727 - 2²³ = 13029750119 is a prime.

It is a super-2 number, since 2×13038138727² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13038138527) 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, 1023703 + ... + 1036360.

It is an arithmetic number, because the mean of its divisors is an integer number (3260051280).

Almost surely, 2^13038138727 is an apocalyptic number.

13038138727 is a deficient number, since it is larger than the sum of its proper divisors (2066393).

13038138727 is an equidigital number, since it uses as much as digits as its factorization.

13038138727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066392.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 13038138727 in words is "thirteen billion, thirty-eight million, one hundred thirty-eight thousand, seven hundred twenty-seven".