27185165168 has 40 divisors (see below), whose sum is σ = 60204146688. Its totient is φ = 11649154752.

The previous prime is 27185165113. The next prime is 27185165191. The reversal of 27185165168 is 86156158172.

It is a super-2 number, since 2×27185165168² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1133105 + ... + 1156847.

Almost surely, 2^27185165168 is an apocalyptic number.

27185165168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27185165168 is an abundant number, since it is smaller than the sum of its proper divisors (33018981520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27185165168 is a wasteful number, since it uses less digits than its factorization.

27185165168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33981 (or 33975 counting only the distinct ones).

The product of its digits is 806400, while the sum is 50.

The spelling of 27185165168 in words is "twenty-seven billion, one hundred eighty-five million, one hundred sixty-five thousand, one hundred sixty-eight".