165005150155 has 8 divisors (see below), whose sum is σ = 198011692512. Its totient is φ = 132000445248.

The previous prime is 165005150143. The next prime is 165005150159. The reversal of 165005150155 is 551051500561.

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 165005150155 - 2¹³ = 165005141963 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 165005150155.

It is not an unprimeable number, because it can be changed into a prime (165005150159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253402 + ... + 627871.

It is an arithmetic number, because the mean of its divisors is an integer number (24751461564).

Almost surely, 2^165005150155 is an apocalyptic number.

165005150155 is a deficient number, since it is larger than the sum of its proper divisors (33006542357).

165005150155 is an equidigital number, since it uses as much as digits as its factorization.

165005150155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918725.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 165005150155 in words is "one hundred sixty-five billion, five million, one hundred fifty thousand, one hundred fifty-five".