16818960020 has 12 divisors (see below), whose sum is σ = 35319816084. Its totient is φ = 6727584000.

The previous prime is 16818959977. The next prime is 16818960061. The reversal of 16818960020 is 2006981861.

It can be written as a sum of positive squares in 2 ways, for example, as 3747153796 + 13071806224 = 61214^2 + 114332^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16818960020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420473981 + ... + 420474020.

It is an arithmetic number, because the mean of its divisors is an integer number (2943318007).

Almost surely, 2^16818960020 is an apocalyptic number.

16818960020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16818960020 is an abundant number, since it is smaller than the sum of its proper divisors (18500856064).

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

16818960020 is a wasteful number, since it uses less digits than its factorization.

16818960020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840948010 (or 840948008 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 16818960020 in words is "sixteen billion, eight hundred eighteen million, nine hundred sixty thousand, twenty".