16798720000 has 280 divisors, whose sum is σ = 44680569516. Its totient is φ = 6291456000.

The previous prime is 16798719979. The next prime is 16798720019. The reversal of 16798720000 is 2789761.

It can be written as a sum of positive squares in 10 ways, for example, as 1207701504 + 15591018496 = 34752^2 + 124864^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 87039904 + ... + 87040096.

Almost surely, 2^16798720000 is an apocalyptic number.

16798720000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16798720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22340284758).

16798720000 is an abundant number, since it is smaller than the sum of its proper divisors (27881849516).

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

16798720000 is an frugal number, since it uses more digits than its factorization.

16798720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 16798720000 in words is "sixteen billion, seven hundred ninety-eight million, seven hundred twenty thousand".