27706423171 has 4 divisors (see below), whose sum is σ = 31664483632. Its totient is φ = 23748362712.

The previous prime is 27706423169. The next prime is 27706423177. The reversal of 27706423171 is 17132460772.

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 27706423171 - 2¹ = 27706423169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27706423177) 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, 1979030220 + ... + 1979030233.

It is an arithmetic number, because the mean of its divisors is an integer number (7916120908).

Almost surely, 2^27706423171 is an apocalyptic number.

27706423171 is a deficient number, since it is larger than the sum of its proper divisors (3958060461).

27706423171 is an equidigital number, since it uses as much as digits as its factorization.

27706423171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958060460.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 27706423171 in words is "twenty-seven billion, seven hundred six million, four hundred twenty-three thousand, one hundred seventy-one".