16668982848 has 224 divisors, whose sum is σ = 52691385600. Its totient is φ = 4549902336.

The previous prime is 16668982829. The next prime is 16668982849. The reversal of 16668982848 is 84828986661.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×16668982848² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16668982849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3778468 + ... + 3782876.

It is an arithmetic number, because the mean of its divisors is an integer number (235229400).

Almost surely, 2^16668982848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16668982848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26345692800).

16668982848 is an abundant number, since it is smaller than the sum of its proper divisors (36022402752).

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

16668982848 is a wasteful number, since it uses less digits than its factorization.

16668982848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557 (or 4547 counting only the distinct ones).

The product of its digits is 63700992, while the sum is 66.

The spelling of 16668982848 in words is "sixteen billion, six hundred sixty-eight million, nine hundred eighty-two thousand, eight hundred forty-eight".