16868567021836 has 6 divisors (see below), whose sum is σ = 29519992288220. Its totient is φ = 8434283510916.

The previous prime is 16868567021809. The next prime is 16868567021851. The reversal of 16868567021836 is 63812076586861.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2108570877726 + ... + 2108570877733.

Almost surely, 2^{16868567021836} is an apocalyptic number.

It is an amenable number.

16868567021836 is a deficient number, since it is larger than the sum of its proper divisors (12651425266384).

16868567021836 is a wasteful number, since it uses less digits than its factorization.

16868567021836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217141755463 (or 4217141755461 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 67.

The spelling of 16868567021836 in words is "sixteen trillion, eight hundred sixty-eight billion, five hundred sixty-seven million, twenty-one thousand, eight hundred thirty-six".