27382921091 has 4 divisors (see below), whose sum is σ = 27394896672. Its totient is φ = 27370945512.

The previous prime is 27382921081. The next prime is 27382921099. The reversal of 27382921091 is 19012928372.

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 27382921091 - 2¹⁴ = 27382904707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27382921099) 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, 5984360 + ... + 5988933.

It is an arithmetic number, because the mean of its divisors is an integer number (6848724168).

Almost surely, 2^27382921091 is an apocalyptic number.

27382921091 is a deficient number, since it is larger than the sum of its proper divisors (11975581).

27382921091 is a wasteful number, since it uses less digits than its factorization.

27382921091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11975580.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 27382921091 in words is "twenty-seven billion, three hundred eighty-two million, nine hundred twenty-one thousand, ninety-one".