155155015171 has 16 divisors (see below), whose sum is σ = 167735034880. Its totient is φ = 142667477280.

The previous prime is 155155015139. The next prime is 155155015187. The reversal of 155155015171 is 171510551551.

155155015171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 155155015171 - 2⁵ = 155155015139 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 155155015171.

It is not an unprimeable number, because it can be changed into a prime (155155015271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17062336 + ... + 17071426.

It is an arithmetic number, because the mean of its divisors is an integer number (10483439680).

Almost surely, 2^155155015171 is an apocalyptic number.

155155015171 is a deficient number, since it is larger than the sum of its proper divisors (12580019709).

155155015171 is a wasteful number, since it uses less digits than its factorization.

155155015171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14026.

The product of its (nonzero) digits is 21875, while the sum is 37.

The spelling of 155155015171 in words is "one hundred fifty-five billion, one hundred fifty-five million, fifteen thousand, one hundred seventy-one".