168500907078 has 192 divisors, whose sum is σ = 406428422400. Its totient is φ = 46408723200.

The previous prime is 168500907077. The next prime is 168500907083. The reversal of 168500907078 is 870709005861.

It is a super-4 number, since 4×168500907078⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 168500907078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168500907073) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 482810448 + ... + 482810796.

It is an arithmetic number, because the mean of its divisors is an integer number (2116814700).

Almost surely, 2^168500907078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168500907078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203214211200).

168500907078 is an abundant number, since it is smaller than the sum of its proper divisors (237927515322).

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

168500907078 is a wasteful number, since it uses less digits than its factorization.

168500907078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 168500907078 in words is "one hundred sixty-eight billion, five hundred million, nine hundred seven thousand, seventy-eight".