168687016872 has 32 divisors (see below), whose sum is σ = 460055501280. Its totient is φ = 51117277760.

The previous prime is 168687016871. The next prime is 168687016891. The reversal of 168687016872 is 278610786861.

It is a happy number.

168687016872 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×168687016872² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168687016871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319482723 + ... + 319483250.

It is an arithmetic number, because the mean of its divisors is an integer number (14376734415).

Almost surely, 2^168687016872 is an apocalyptic number.

168687016872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168687016872 is an abundant number, since it is smaller than the sum of its proper divisors (291368484408).

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

168687016872 is a wasteful number, since it uses less digits than its factorization.

168687016872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638965993 (or 638965989 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 168687016872 in words is "one hundred sixty-eight billion, six hundred eighty-seven million, sixteen thousand, eight hundred seventy-two".