168017035138 has 8 divisors (see below), whose sum is σ = 252051114240. Its totient is φ = 83999997060.

The previous prime is 168017035117. The next prime is 168017035141. The reversal of 168017035138 is 831530710861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 168017035094 and 168017035103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235578 + ... + 4275061.

It is an arithmetic number, because the mean of its divisors is an integer number (31506389280).

Almost surely, 2^168017035138 is an apocalyptic number.

168017035138 is a deficient number, since it is larger than the sum of its proper divisors (84034079102).

168017035138 is an equidigital number, since it uses as much as digits as its factorization.

168017035138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520512.

The product of its (nonzero) digits is 120960, while the sum is 43.

Adding to 168017035138 its reverse (831530710861), we get a palindrome (999547745999).

The spelling of 168017035138 in words is "one hundred sixty-eight billion, seventeen million, thirty-five thousand, one hundred thirty-eight".