16669957852800 has 1152 divisors, whose sum is σ = 70610966025600. Its totient is φ = 3809369088000.

The previous prime is 16669957852777. The next prime is 16669957852817. The reversal of 16669957852800 is 825875996661.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3968090700 + ... + 3968094900.

Almost surely, 2^{16669957852800} is an apocalyptic number.

16669957852800 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 16669957852800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35305483012800).

16669957852800 is an abundant number, since it is smaller than the sum of its proper divisors (53941008172800).

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

16669957852800 is an frugal number, since it uses more digits than its factorization.

16669957852800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265 (or 4218 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 72.

The spelling of 16669957852800 in words is "sixteen trillion, six hundred sixty-nine billion, nine hundred fifty-seven million, eight hundred fifty-two thousand, eight hundred".