165156550560155 has 16 divisors (see below), whose sum is σ = 247091358760704. Its totient is φ = 102954732816480.

The previous prime is 165156550560143. The next prime is 165156550560173. The reversal of 165156550560155 is 551065055651561.

It is not a de Polignac number, because 165156550560155 - 2¹² = 165156550556059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165156550560155.

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, 214489026317 + ... + 214489027086.

It is an arithmetic number, because the mean of its divisors is an integer number (15443209922544).

Almost surely, 2^{165156550560155} is an apocalyptic number.

165156550560155 is a deficient number, since it is larger than the sum of its proper divisors (81934808200549).

165156550560155 is a wasteful number, since it uses less digits than its factorization.

165156550560155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428978053426.

The product of its (nonzero) digits is 16875000, while the sum is 56.

The spelling of 165156550560155 in words is "one hundred sixty-five trillion, one hundred fifty-six billion, five hundred fifty million, five hundred sixty thousand, one hundred fifty-five".