13138271999 has 4 divisors (see below), whose sum is σ = 13138688640. Its totient is φ = 13137855360.

The previous prime is 13138271989. The next prime is 13138272011. The reversal of 13138271999 is 99917283131.

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 13138271999 - 2⁴ = 13138271983 is a prime.

It is a super-2 number, since 2×13138271999² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13138271999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138271989) 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, 156767 + ... + 225504.

It is an arithmetic number, because the mean of its divisors is an integer number (3284672160).

Almost surely, 2^13138271999 is an apocalyptic number.

13138271999 is a deficient number, since it is larger than the sum of its proper divisors (416641).

13138271999 is an equidigital number, since it uses as much as digits as its factorization.

13138271999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416640.

The product of its digits is 734832, while the sum is 53.

The spelling of 13138271999 in words is "thirteen billion, one hundred thirty-eight million, two hundred seventy-one thousand, nine hundred ninety-nine".