65666005165 has 16 divisors (see below), whose sum is σ = 83579728320. Its totient is φ = 49388002560.

The previous prime is 65666005091. The next prime is 65666005177. The reversal of 65666005165 is 56150066656.

It is not a de Polignac number, because 65666005165 - 2³³ = 57076070573 is a prime.

It is a congruent 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, 2625804 + ... + 2650693.

It is an arithmetic number, because the mean of its divisors is an integer number (5223733020).

Almost surely, 2^65666005165 is an apocalyptic number.

It is an amenable number.

65666005165 is a deficient number, since it is larger than the sum of its proper divisors (17913723155).

65666005165 is a wasteful number, since it uses less digits than its factorization.

65666005165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276652.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 65666005165 in words is "sixty-five billion, six hundred sixty-six million, five thousand, one hundred sixty-five".