27160028809 has 9 divisors (see below), whose sum is σ = 27459077607. Its totient is φ = 26864207424.

The previous prime is 27160028761. The next prime is 27160028839. The reversal of 27160028809 is 90882006172.

The square root of 27160028809 is 164803.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12195889225 + 14964139584 = 110435^2 + 122328^2 .

It is not a de Polignac number, because 27160028809 - 2⁹ = 27160028297 is a prime.

It is a Duffinian number.

27160028809 is a modest number, since divided by 28809 gives 27160 as remainder.

It is not an unprimeable number, because it can be changed into a prime (27160028839) 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 8 ways as a sum of consecutive naturals, for example, 15985042 + ... + 15986740.

It is an arithmetic number, because the mean of its divisors is an integer number (3051008623).

Almost surely, 2^27160028809 is an apocalyptic number.

27160028809 is the 164803-rd square number.

27160028809 is the 82402-nd centered octagonal number.

It is an amenable number.

27160028809 is a deficient number, since it is larger than the sum of its proper divisors (299048798).

27160028809 is an frugal number, since it uses more digits than its factorization.

27160028809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592 (or 1796 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 27160028809 in words is "twenty-seven billion, one hundred sixty million, twenty-eight thousand, eight hundred nine".