171216066743 has 4 divisors (see below), whose sum is σ = 171692992080. Its totient is φ = 170739141408.

The previous prime is 171216066733. The next prime is 171216066767. The reversal of 171216066743 is 347660612171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347660612171 = 103391 ⋅3362581.

It is a cyclic number.

It is not a de Polignac number, because 171216066743 - 2¹⁰ = 171216065719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171216066694 and 171216066703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171216066733) 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 3 ways as a sum of consecutive naturals, for example, 238462130 + ... + 238462847.

It is an arithmetic number, because the mean of its divisors is an integer number (42923248020).

Almost surely, 2^171216066743 is an apocalyptic number.

171216066743 is a deficient number, since it is larger than the sum of its proper divisors (476925337).

171216066743 is an equidigital number, since it uses as much as digits as its factorization.

171216066743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476925336.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 171216066743 in words is "one hundred seventy-one billion, two hundred sixteen million, sixty-six thousand, seven hundred forty-three".