171400172017 has 16 divisors (see below), whose sum is σ = 177553219072. Its totient is φ = 165287122560.

The previous prime is 171400171967. The next prime is 171400172029. The reversal of 171400172017 is 710271004171.

It is a cyclic number.

It is not a de Polignac number, because 171400172017 - 2³¹ = 169252688369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 171400172017.

It is not an unprimeable number, because it can be changed into a prime (171400170017) 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, 11141743 + ... + 11157115.

It is an arithmetic number, because the mean of its divisors is an integer number (11097076192).

Almost surely, 2^171400172017 is an apocalyptic number.

It is an amenable number.

171400172017 is a deficient number, since it is larger than the sum of its proper divisors (6153047055).

171400172017 is a wasteful number, since it uses less digits than its factorization.

171400172017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16648.

The product of its (nonzero) digits is 2744, while the sum is 31.

Adding to 171400172017 its reverse (710271004171), we get a palindrome (881671176188).

The spelling of 171400172017 in words is "one hundred seventy-one billion, four hundred million, one hundred seventy-two thousand, seventeen".