27135305609 has 16 divisors (see below), whose sum is σ = 28377686016. Its totient is φ = 25917699600.

The previous prime is 27135305581. The next prime is 27135305611. The reversal of 27135305609 is 90650353172.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27135305609 - 2¹⁶ = 27135240073 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27135305629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883814 + ... + 914000.

It is an arithmetic number, because the mean of its divisors is an integer number (1773605376).

Almost surely, 2^27135305609 is an apocalyptic number.

It is an amenable number.

27135305609 is a deficient number, since it is larger than the sum of its proper divisors (1242380407).

27135305609 is a wasteful number, since it uses less digits than its factorization.

27135305609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30596.

The product of its (nonzero) digits is 170100, while the sum is 41.

The spelling of 27135305609 in words is "twenty-seven billion, one hundred thirty-five million, three hundred five thousand, six hundred nine".