27091060605 has 128 divisors (see below), whose sum is σ = 58169548800. Its totient is φ = 11686021632.

The previous prime is 27091060597. The next prime is 27091060627. The reversal of 27091060605 is 50606019072.

It is not a de Polignac number, because 27091060605 - 2³ = 27091060597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27091060605.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 4719297 + ... + 4725033.

It is an arithmetic number, because the mean of its divisors is an integer number (454449600).

Almost surely, 2^27091060605 is an apocalyptic number.

It is an amenable number.

27091060605 is an abundant number, since it is smaller than the sum of its proper divisors (31078488195).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27091060605 is a wasteful number, since it uses less digits than its factorization.

27091060605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040 (or 6034 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

Adding to 27091060605 its reverse (50606019072), we get a palindrome (77697079677).

The spelling of 27091060605 in words is "twenty-seven billion, ninety-one million, sixty thousand, six hundred five".