27843260769 has 9 divisors (see below), whose sum is σ = 40218766419. Its totient is φ = 18561840120.

The previous prime is 27843260737. The next prime is 27843260777. The reversal of 27843260769 is 96706234872.

The square root of 27843260769 is 166863.

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

27843260769 is a `hidden beast` number, since 27 + 8 + 4 + 3 + 2 + 607 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1657548369 + 26185712400 = 40713^2 + 161820^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 27843260769 - 2⁵ = 27843260737 is a prime.

It is a super-2 number, since 2×27843260769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27843260729) 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 8 ways as a sum of consecutive naturals, for example, 472779 + ... + 528399.

Almost surely, 2^27843260769 is an apocalyptic number.

27843260769 is the 166863-rd square number.

27843260769 is the 83432-nd centered octagonal number.

It is an amenable number.

27843260769 is a deficient number, since it is larger than the sum of its proper divisors (12375505650).

27843260769 is an frugal number, since it uses more digits than its factorization.

27843260769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111248 (or 55624 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 27843260769 in words is "twenty-seven billion, eight hundred forty-three million, two hundred sixty thousand, seven hundred sixty-nine".