118443420171 has 6 divisors (see below), whose sum is σ = 171084940260. Its totient is φ = 78962280108.

The previous prime is 118443420133. The next prime is 118443420181. The reversal of 118443420171 is 171024344811.

118443420171 is a `hidden beast` number, since 1 + 1 + 8 + 443 + 4 + 201 + 7 + 1 = 666.

It is not a de Polignac number, because 118443420171 - 2⁶ = 118443420107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118443420181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6580190001 + ... + 6580190018.

It is an arithmetic number, because the mean of its divisors is an integer number (28514156710).

Almost surely, 2^118443420171 is an apocalyptic number.

118443420171 is a deficient number, since it is larger than the sum of its proper divisors (52641520089).

118443420171 is a wasteful number, since it uses less digits than its factorization.

118443420171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160380025 (or 13160380022 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

Adding to 118443420171 its reverse (171024344811), we get a palindrome (289467764982).

The spelling of 118443420171 in words is "one hundred eighteen billion, four hundred forty-three million, four hundred twenty thousand, one hundred seventy-one".