16868567021808 has 40 divisors (see below), whose sum is σ = 43577279824000. Its totient is φ = 5622836531904.

The previous prime is 16868567021633. The next prime is 16868567021809. The reversal of 16868567021808 is 80812076586861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16868567021809) 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, 24533493 + ... + 25211691.

It is an arithmetic number, because the mean of its divisors is an integer number (1089431995600).

Almost surely, 2^{16868567021808} is an apocalyptic number.

It is an amenable number.

16868567021808 is an abundant number, since it is smaller than the sum of its proper divisors (26708712802192).

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

16868567021808 is a wasteful number, since it uses less digits than its factorization.

16868567021808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196389 (or 1196383 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 66.

The spelling of 16868567021808 in words is "sixteen trillion, eight hundred sixty-eight billion, five hundred sixty-seven million, twenty-one thousand, eight hundred eight".