171112878163 has 4 divisors (see below), whose sum is σ = 174341423088. Its totient is φ = 167884333240.

The previous prime is 171112878109. The next prime is 171112878173. The reversal of 171112878163 is 361878211171.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361878211171 = 1013 ⋅357234167.

It is a cyclic number.

It is not a de Polignac number, because 171112878163 - 2¹³ = 171112869971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171112878173) 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, 1614272383 + ... + 1614272488.

It is an arithmetic number, because the mean of its divisors is an integer number (43585355772).

Almost surely, 2^171112878163 is an apocalyptic number.

171112878163 is a deficient number, since it is larger than the sum of its proper divisors (3228544925).

171112878163 is an equidigital number, since it uses as much as digits as its factorization.

171112878163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3228544924.

The product of its digits is 112896, while the sum is 46.

The spelling of 171112878163 in words is "one hundred seventy-one billion, one hundred twelve million, eight hundred seventy-eight thousand, one hundred sixty-three".