165066016655 has 8 divisors (see below), whose sum is σ = 199105538352. Its totient is φ = 131368601088.

The previous prime is 165066016631. The next prime is 165066016657. The reversal of 165066016655 is 556610660561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165066016655 - 2²² = 165061822351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165066016657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85525469 + ... + 85527398.

It is an arithmetic number, because the mean of its divisors is an integer number (24888192294).

Almost surely, 2^165066016655 is an apocalyptic number.

165066016655 is a deficient number, since it is larger than the sum of its proper divisors (34039521697).

165066016655 is a wasteful number, since it uses less digits than its factorization.

165066016655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171053065.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 165066016655 in words is "one hundred sixty-five billion, sixty-six million, sixteen thousand, six hundred fifty-five".