165015610655611 has 8 divisors (see below), whose sum is σ = 175793421625920. Its totient is φ = 154447077568392.

The previous prime is 165015610655591. The next prime is 165015610655689. The reversal of 165015610655611 is 116556016510561.

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 165015610655611 - 2¹⁵ = 165015610622843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165015610655011) 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, 52319469145 + ... + 52319472298.

It is an arithmetic number, because the mean of its divisors is an integer number (21974177703240).

Almost surely, 2^{165015610655611} is an apocalyptic number.

165015610655611 is a deficient number, since it is larger than the sum of its proper divisors (10777810970309).

165015610655611 is a wasteful number, since it uses less digits than its factorization.

165015610655611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104638941545.

The product of its (nonzero) digits is 810000, while the sum is 49.

The spelling of 165015610655611 in words is "one hundred sixty-five trillion, fifteen billion, six hundred ten million, six hundred fifty-five thousand, six hundred eleven".