27138908159 has 4 divisors (see below), whose sum is σ = 29606081640. Its totient is φ = 24671734680.

The previous prime is 27138908141. The next prime is 27138908179. The reversal of 27138908159 is 95180983172.

It is a happy number.

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 27138908159 - 2²⁰ = 27137859583 is a prime.

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 27138908159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27138908179) 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, 1233586724 + ... + 1233586745.

It is an arithmetic number, because the mean of its divisors is an integer number (7401520410).

Almost surely, 2^27138908159 is an apocalyptic number.

27138908159 is a deficient number, since it is larger than the sum of its proper divisors (2467173481).

27138908159 is a wasteful number, since it uses less digits than its factorization.

27138908159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467173480.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 27138908159 in words is "twenty-seven billion, one hundred thirty-eight million, nine hundred eight thousand, one hundred fifty-nine".