165017156155 has 8 divisors (see below), whose sum is σ = 198036437472. Its totient is φ = 132003158208.

The previous prime is 165017156153. The next prime is 165017156159. The reversal of 165017156155 is 551651710561.

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 165017156155 - 2¹ = 165017156153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165017156153) 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, 1251799 + ... + 1377328.

It is an arithmetic number, because the mean of its divisors is an integer number (24754554684).

Almost surely, 2^165017156155 is an apocalyptic number.

165017156155 is a deficient number, since it is larger than the sum of its proper divisors (33019281317).

165017156155 is a wasteful number, since it uses less digits than its factorization.

165017156155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641685.

The product of its (nonzero) digits is 157500, while the sum is 43.

The spelling of 165017156155 in words is "one hundred sixty-five billion, seventeen million, one hundred fifty-six thousand, one hundred fifty-five".