16669421775360 has 1280 divisors, whose sum is σ = 64960137285120. Its totient is φ = 4085399420928.

The previous prime is 16669421775359. The next prime is 16669421775361. The reversal of 16669421775360 is 6357712496661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16669421775359) and next prime (16669421775361).

It is a tau number, because it is divible by the number of its divisors (1280).

It is a super-2 number, since 2×16669421775360² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16669421775361) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4092662284 + ... + 4092666356.

It is an arithmetic number, because the mean of its divisors is an integer number (50750107254).

Almost surely, 2^{16669421775360} is an apocalyptic number.

16669421775360 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 16669421775360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32480068642560).

16669421775360 is an abundant number, since it is smaller than the sum of its proper divisors (48290715509760).

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

16669421775360 is an frugal number, since it uses more digits than its factorization.

16669421775360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177 (or 4143 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 16669421775360 in words is "sixteen trillion, six hundred sixty-nine billion, four hundred twenty-one million, seven hundred seventy-five thousand, three hundred sixty".