16664288416 has 48 divisors (see below), whose sum is σ = 34055320320. Its totient is φ = 8021134080.

The previous prime is 16664288351. The next prime is 16664288423. The reversal of 16664288416 is 61488246661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925 + ... + 182563.

It is an arithmetic number, because the mean of its divisors is an integer number (709485840).

Almost surely, 2^16664288416 is an apocalyptic number.

16664288416 is a gapful number since it is divisible by the number (16) 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 16664288416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17027660160).

16664288416 is an abundant number, since it is smaller than the sum of its proper divisors (17391031904).

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

16664288416 is a wasteful number, since it uses less digits than its factorization.

16664288416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181757 (or 181749 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The spelling of 16664288416 in words is "sixteen billion, six hundred sixty-four million, two hundred eighty-eight thousand, four hundred sixteen".