27318564065065 has 64 divisors (see below), whose sum is σ = 40784579297280. Its totient is φ = 17105353977600.

The previous prime is 27318564065059. The next prime is 27318564065083. The reversal of 27318564065065 is 56056046581372.

It is a happy number.

It is not a de Polignac number, because 27318564065065 - 2⁵ = 27318564065033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15588652 + ... + 17252338.

It is an arithmetic number, because the mean of its divisors is an integer number (637259051520).

Almost surely, 2^{27318564065065} is an apocalyptic number.

It is an amenable number.

27318564065065 is a deficient number, since it is larger than the sum of its proper divisors (13466015232215).

27318564065065 is a wasteful number, since it uses less digits than its factorization.

27318564065065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664102.

The product of its (nonzero) digits is 36288000, while the sum is 58.

The spelling of 27318564065065 in words is "twenty-seven trillion, three hundred eighteen billion, five hundred sixty-four million, sixty-five thousand, sixty-five".