16868567021838 has 32 divisors (see below), whose sum is σ = 38653844872704. Its totient is φ = 4807450546272.

The previous prime is 16868567021809. The next prime is 16868567021851. The reversal of 16868567021838 is 83812076586861.

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, 505817770 + ... + 505851117.

It is an arithmetic number, because the mean of its divisors is an integer number (1207932652272).

Almost surely, 2^{16868567021838} is an apocalyptic number.

16868567021838 is an abundant number, since it is smaller than the sum of its proper divisors (21785277850866).

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

16868567021838 is a wasteful number, since it uses less digits than its factorization.

16868567021838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011669296.

The product of its (nonzero) digits is 185794560, while the sum is 69.

The spelling of 16868567021838 in words is "sixteen trillion, eight hundred sixty-eight billion, five hundred sixty-seven million, twenty-one thousand, eight hundred thirty-eight".