171216066834 has 48 divisors (see below), whose sum is σ = 373572400032. Its totient is φ = 56671985664.

The previous prime is 171216066821. The next prime is 171216066839. The reversal of 171216066834 is 438660612171.

171216066834 is a `hidden beast` number, since 1 + 7 + 1 + 2 + 1 + 606 + 6 + 8 + 34 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 171216066834.

It is not an unprimeable number, because it can be changed into a prime (171216066839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3387154 + ... + 3437330.

It is an arithmetic number, because the mean of its divisors is an integer number (7782758334).

Almost surely, 2^171216066834 is an apocalyptic number.

171216066834 is an abundant number, since it is smaller than the sum of its proper divisors (202356333198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171216066834 is a wasteful number, since it uses less digits than its factorization.

171216066834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51511 (or 51508 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 171216066834 in words is "one hundred seventy-one billion, two hundred sixteen million, sixty-six thousand, eight hundred thirty-four".