27063211081 has 9 divisors (see below), whose sum is σ = 28751780149. Its totient is φ = 25468625344.

The previous prime is 27063211057. The next prime is 27063211099. The reversal of 27063211081 is 18011236072.

The square root of 27063211081 is 164509.

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

It can be written as a sum of positive squares in 4 ways, for example, as 5823063481 + 21240147600 = 76309^2 + 145740^2 .

It is not a de Polignac number, because 27063211081 - 2¹³ = 27063202889 is a prime.

It is a super-3 number, since 3×27063211081³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27063211031) 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, 2791815 + ... + 2801491.

Almost surely, 2^27063211081 is an apocalyptic number.

27063211081 is the 164509-th square number.

27063211081 is the 82255-th centered octagonal number.

It is an amenable number.

27063211081 is a deficient number, since it is larger than the sum of its proper divisors (1688569068).

27063211081 is an frugal number, since it uses more digits than its factorization.

27063211081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19388 (or 9694 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

It can be divided in two parts, 27063 and 211081, that added together give a square (238144 = 488²).

The spelling of 27063211081 in words is "twenty-seven billion, sixty-three million, two hundred eleven thousand, eighty-one".