16817594421836 has 48 divisors (see below), whose sum is σ = 33562353996864. Its totient is φ = 7304670099456.

The previous prime is 16817594421821. The next prime is 16817594421907. The reversal of 16817594421836 is 63812449571861.

It is a super-2 number, since 2×16817594421836² (a number of 27 digits) contains 22 as substring.

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, 8223536 + ... + 10062888.

It is an arithmetic number, because the mean of its divisors is an integer number (699215708268).

Almost surely, 2^{16817594421836} is an apocalyptic number.

It is an amenable number.

16817594421836 is a deficient number, since it is larger than the sum of its proper divisors (16744759575028).

16817594421836 is a wasteful number, since it uses less digits than its factorization.

16817594421836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849730 (or 1849728 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 65.

The spelling of 16817594421836 in words is "sixteen trillion, eight hundred seventeen billion, five hundred ninety-four million, four hundred twenty-one thousand, eight hundred thirty-six".