27670245171 has 16 divisors (see below), whose sum is σ = 37260088320. Its totient is φ = 18263695680.

The previous prime is 27670245157. The next prime is 27670245179. The reversal of 27670245171 is 17154207672.

It is not a de Polignac number, because 27670245171 - 2³⁰ = 26596503347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27670245179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2153815 + ... + 2166623.

It is an arithmetic number, because the mean of its divisors is an integer number (2328755520).

Almost surely, 2^27670245171 is an apocalyptic number.

27670245171 is a deficient number, since it is larger than the sum of its proper divisors (9589843149).

27670245171 is a wasteful number, since it uses less digits than its factorization.

27670245171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19906.

The product of its (nonzero) digits is 164640, while the sum is 42.

The spelling of 27670245171 in words is "twenty-seven billion, six hundred seventy million, two hundred forty-five thousand, one hundred seventy-one".