84317885171 has 4 divisors (see below), whose sum is σ = 90803876352. Its totient is φ = 77831893992.

The previous prime is 84317885153. The next prime is 84317885173. The reversal of 84317885171 is 17158871348.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84317885171 - 2¹⁴ = 84317868787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84317885173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242995571 + ... + 3242995596.

It is an arithmetic number, because the mean of its divisors is an integer number (22700969088).

Almost surely, 2^84317885171 is an apocalyptic number.

84317885171 is a deficient number, since it is larger than the sum of its proper divisors (6485991181).

84317885171 is a wasteful number, since it uses less digits than its factorization.

84317885171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485991180.

The product of its digits is 1505280, while the sum is 53.

The spelling of 84317885171 in words is "eighty-four billion, three hundred seventeen million, eight hundred eighty-five thousand, one hundred seventy-one".