65535165665 has 16 divisors (see below), whose sum is σ = 83539475712. Its totient is φ = 49183375104.

The previous prime is 65535165659. The next prime is 65535165697. The reversal of 65535165665 is 56656153556.

It is not a de Polignac number, because 65535165665 - 2⁴ = 65535165649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1229609 + ... + 1281798.

It is an arithmetic number, because the mean of its divisors is an integer number (5221217232).

Almost surely, 2^65535165665 is an apocalyptic number.

It is an amenable number.

65535165665 is a deficient number, since it is larger than the sum of its proper divisors (18004310047).

65535165665 is a wasteful number, since it uses less digits than its factorization.

65535165665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2511736.

The product of its digits is 12150000, while the sum is 53.

The spelling of 65535165665 in words is "sixty-five billion, five hundred thirty-five million, one hundred sixty-five thousand, six hundred sixty-five".