27011908609 has 27 divisors (see below), whose sum is σ = 32098527363. Its totient is φ = 22664936112.

The previous prime is 27011908589. The next prime is 27011908613. The reversal of 27011908609 is 90680911072.

The square root of 27011908609 is 164353.

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., 19472807025 + 7539101584 = 139545^2 + 86828^2 .

It is not a de Polignac number, because 27011908609 - 2⁹ = 27011908097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27011908639) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60974742 + ... + 60975184.

Almost surely, 2^27011908609 is an apocalyptic number.

27011908609 is the 164353-rd square number.

27011908609 is the 82177-th centered octagonal number.

It is an amenable number.

27011908609 is a deficient number, since it is larger than the sum of its proper divisors (5086618754).

27011908609 is an frugal number, since it uses more digits than its factorization.

27011908609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 27011908609 in words is "twenty-seven billion, eleven million, nine hundred eight thousand, six hundred nine".