171366949663171 has 16 divisors (see below), whose sum is σ = 185044486248000. Its totient is φ = 158212020814848.

The previous prime is 171366949663067. The next prime is 171366949663183.

171366949663171 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 171366949663171 - 2²¹ = 171366947566019 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 171366949663171.

It is not an unprimeable number, because it can be changed into a prime (171366949663271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40098486 + ... + 44165851.

It is an arithmetic number, because the mean of its divisors is an integer number (11565280390500).

Almost surely, 2^{171366949663171} is an apocalyptic number.

171366949663171 is a deficient number, since it is larger than the sum of its proper divisors (13677536584829).

171366949663171 is a wasteful number, since it uses less digits than its factorization.

171366949663171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84267438.

The product of its digits is 185177664, while the sum is 70.

The spelling of 171366949663171 in words is "one hundred seventy-one trillion, three hundred sixty-six billion, nine hundred forty-nine million, six hundred sixty-three thousand, one hundred seventy-one".