165571070155 has 32 divisors (see below), whose sum is σ = 211791754944. Its totient is φ = 123827183616.

The previous prime is 165571070141. The next prime is 165571070183. The reversal of 165571070155 is 551070175561.

It is a cyclic number.

It is not a de Polignac number, because 165571070155 - 2³⁵ = 131211331787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7614579 + ... + 7636291.

It is an arithmetic number, because the mean of its divisors is an integer number (6618492342).

Almost surely, 2^165571070155 is an apocalyptic number.

165571070155 is a deficient number, since it is larger than the sum of its proper divisors (46220684789).

165571070155 is a wasteful number, since it uses less digits than its factorization.

165571070155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22335.

The product of its (nonzero) digits is 183750, while the sum is 43.

The spelling of 165571070155 in words is "one hundred sixty-five billion, five hundred seventy-one million, seventy thousand, one hundred fifty-five".