118178156671 has 4 divisors (see below), whose sum is σ = 118245573232. Its totient is φ = 118110740112.

The previous prime is 118178156669. The next prime is 118178156713. The reversal of 118178156671 is 176651871811.

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 118178156671 - 2¹ = 118178156669 is a prime.

It is the 343771-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118178156611) by changing a digit.

It is a nontrivial repunit in base 343770.

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, 33705651 + ... + 33709156.

It is an arithmetic number, because the mean of its divisors is an integer number (29561393308).

Almost surely, 2^118178156671 is an apocalyptic number.

118178156671 is a deficient number, since it is larger than the sum of its proper divisors (67416561).

118178156671 is an equidigital number, since it uses as much as digits as its factorization.

118178156671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67416560.

The product of its digits is 564480, while the sum is 52.

The spelling of 118178156671 in words is "one hundred eighteen billion, one hundred seventy-eight million, one hundred fifty-six thousand, six hundred seventy-one".