165510601066011 has 8 divisors (see below), whose sum is σ = 223160360988240. Its totient is φ = 109100620927232.

The previous prime is 165510601065961. The next prime is 165510601066049. The reversal of 165510601066011 is 110660106015561.

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 165510601066011 - 2²³ = 165510592677403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165510601166011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309944945550 + ... + 309944946083.

It is an arithmetic number, because the mean of its divisors is an integer number (27895045123530).

Almost surely, 2^{165510601066011} is an apocalyptic number.

165510601066011 is a deficient number, since it is larger than the sum of its proper divisors (57649759922229).

165510601066011 is an equidigital number, since it uses as much as digits as its factorization.

165510601066011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619889891725.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 165510601066011 in words is "one hundred sixty-five trillion, five hundred ten billion, six hundred one million, sixty-six thousand, eleven".