168352518121 has 8 divisors (see below), whose sum is σ = 174170304000. Its totient is φ = 162558923520.

The previous prime is 168352518079. The next prime is 168352518127. The reversal of 168352518121 is 121815253861.

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

It is a cyclic number.

It is not a de Polignac number, because 168352518121 - 2²¹ = 168350420969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168352518127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6033661 + ... + 6061498.

It is an arithmetic number, because the mean of its divisors is an integer number (21771288000).

Almost surely, 2^168352518121 is an apocalyptic number.

It is an amenable number.

168352518121 is a deficient number, since it is larger than the sum of its proper divisors (5817785879).

168352518121 is a wasteful number, since it uses less digits than its factorization.

168352518121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12095639.

The product of its digits is 115200, while the sum is 43.

The spelling of 168352518121 in words is "one hundred sixty-eight billion, three hundred fifty-two million, five hundred eighteen thousand, one hundred twenty-one".