165066661516065 has 64 divisors (see below), whose sum is σ = 265629811249152. Its totient is φ = 87529322649600.

The previous prime is 165066661516007. The next prime is 165066661516069. The reversal of 165066661516065 is 560615166660561.

It is not a de Polignac number, because 165066661516065 - 2³⁵ = 165032301777697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165066661516069) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5439292222 + ... + 5439322568.

It is an arithmetic number, because the mean of its divisors is an integer number (4150465800768).

Almost surely, 2^{165066661516065} is an apocalyptic number.

165066661516065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165066661516065 is a deficient number, since it is larger than the sum of its proper divisors (100563149733087).

165066661516065 is a wasteful number, since it uses less digits than its factorization.

165066661516065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33350.

The product of its (nonzero) digits is 34992000, while the sum is 60.

The spelling of 165066661516065 in words is "one hundred sixty-five trillion, sixty-six billion, six hundred sixty-one million, five hundred sixteen thousand, sixty-five".