16643460585472 has 192 divisors, whose sum is σ = 38834437824000. Its totient is φ = 7128253440000.

The previous prime is 16643460585439. The next prime is 16643460585487. The reversal of 16643460585472 is 27458506434661.

It is a self number, because there is not a number n which added to its sum of digits gives 16643460585472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210338597 + ... + 1210352347.

It is an arithmetic number, because the mean of its divisors is an integer number (202262697000).

Almost surely, 2^{16643460585472} 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 16643460585472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19417218912000).

16643460585472 is an abundant number, since it is smaller than the sum of its proper divisors (22190977238528).

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

16643460585472 is an equidigital number, since it uses as much as digits as its factorization.

16643460585472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15517 (or 15483 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 61.

The spelling of 16643460585472 in words is "sixteen trillion, six hundred forty-three billion, four hundred sixty million, five hundred eighty-five thousand, four hundred seventy-two".