27171023164 has 12 divisors (see below), whose sum is σ = 47552156064. Its totient is φ = 13584692864.

The previous prime is 27171023147. The next prime is 27171023167. The reversal of 27171023164 is 46132017172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27171023167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126709 + ... + 265324.

It is an arithmetic number, because the mean of its divisors is an integer number (3962679672).

Almost surely, 2^27171023164 is an apocalyptic number.

It is an amenable number.

27171023164 is a deficient number, since it is larger than the sum of its proper divisors (20381132900).

27171023164 is a wasteful number, since it uses less digits than its factorization.

27171023164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409364 (or 409362 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 27171023164 in words is "twenty-seven billion, one hundred seventy-one million, twenty-three thousand, one hundred sixty-four".