168517020342 has 32 divisors (see below), whose sum is σ = 367689009024. Its totient is φ = 51063609600.

The previous prime is 168517020337. The next prime is 168517020361. The reversal of 168517020342 is 243020715861.

It is a super-2 number, since 2×168517020342² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 168517020342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2288742 + ... + 2361222.

It is an arithmetic number, because the mean of its divisors is an integer number (11490281532).

Almost surely, 2^168517020342 is an apocalyptic number.

168517020342 is an abundant number, since it is smaller than the sum of its proper divisors (199171988682).

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

168517020342 is a wasteful number, since it uses less digits than its factorization.

168517020342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107724.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 168517020342 in words is "one hundred sixty-eight billion, five hundred seventeen million, twenty thousand, three hundred forty-two".