171583008138 has 24 divisors (see below), whose sum is σ = 380830580676. Its totient is φ = 55799352000.

The previous prime is 171583008131. The next prime is 171583008257. The reversal of 171583008138 is 831800385171.

171583008138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155798352369 + 15784655769 = 394713^2 + 125637^2 .

It is a junction number, because it is equal to n+sod(n) for n = 171583008093 and 171583008102.

It is not an unprimeable number, because it can be changed into a prime (171583008131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116247913 + ... + 116249388.

Almost surely, 2^171583008138 is an apocalyptic number.

171583008138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

171583008138 is an abundant number, since it is smaller than the sum of its proper divisors (209247572538).

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

171583008138 is a wasteful number, since it uses less digits than its factorization.

171583008138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232497350 (or 232497347 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 171583008138 in words is "one hundred seventy-one billion, five hundred eighty-three million, eight thousand, one hundred thirty-eight".