27728765164 has 48 divisors (see below), whose sum is σ = 50894010720. Its totient is φ = 13201448960.

The previous prime is 27728765147. The next prime is 27728765179. The reversal of 27728765164 is 46156782772.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 6169302 + ... + 6173794.

It is an arithmetic number, because the mean of its divisors is an integer number (1060291890).

Almost surely, 2^27728765164 is an apocalyptic number.

It is an amenable number.

27728765164 is a deficient number, since it is larger than the sum of its proper divisors (23165245556).

27728765164 is a wasteful number, since it uses less digits than its factorization.

27728765164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250 (or 5248 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 55.

The spelling of 27728765164 in words is "twenty-seven billion, seven hundred twenty-eight million, seven hundred sixty-five thousand, one hundred sixty-four".