16800008000 has 56 divisors (see below), whose sum is σ = 41605239624. Its totient is φ = 6720000000.

The previous prime is 16800007969. The next prime is 16800008003. The reversal of 16800008000 is 80000861.

It can be written as a sum of positive squares in 4 ways, for example, as 458987776 + 16341020224 = 21424^2 + 127832^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16800008003) 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, 1042001 + ... + 1058000.

Almost surely, 2^16800008000 is an apocalyptic number.

16800008000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16800008000 is an abundant number, since it is smaller than the sum of its proper divisors (24805231624).

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

16800008000 is an equidigital number, since it uses as much as digits as its factorization.

16800008000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100028 (or 2100008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 16800008000 its reverse (80000861), we get a palindrome (16880008861).

The spelling of 16800008000 in words is "sixteen billion, eight hundred million, eight thousand".