16678247680 has 36 divisors (see below), whose sum is σ = 39949618212. Its totient is φ = 6671298560.

The previous prime is 16678247603. The next prime is 16678247683. The reversal of 16678247680 is 8674287661.

It can be written as a sum of positive squares in 2 ways, for example, as 12637357056 + 4040890624 = 112416^2 + 63568^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16678247683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6513661 + ... + 6516220.

It is an arithmetic number, because the mean of its divisors is an integer number (1109711617).

Almost surely, 2^16678247680 is an apocalyptic number.

16678247680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16678247680 is an abundant number, since it is smaller than the sum of its proper divisors (23271370532).

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

16678247680 is an equidigital number, since it uses as much as digits as its factorization.

16678247680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13029902 (or 13029888 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 16678247680 in words is "sixteen billion, six hundred seventy-eight million, two hundred forty-seven thousand, six hundred eighty".