16663106880 has 672 divisors, whose sum is σ = 68299096320. Its totient is φ = 3649536000.

The previous prime is 16663106833. The next prime is 16663106893. The reversal of 16663106880 is 8860136661.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66386755 + ... + 66387005.

It is an arithmetic number, because the mean of its divisors is an integer number (101635560).

Almost surely, 2^16663106880 is an apocalyptic number.

16663106880 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 16663106880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34149548160).

16663106880 is an abundant number, since it is smaller than the sum of its proper divisors (51635989440).

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

16663106880 is a wasteful number, since it uses less digits than its factorization.

16663106880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 16663106880 in words is "sixteen billion, six hundred sixty-three million, one hundred six thousand, eight hundred eighty".