16661024560 has 80 divisors (see below), whose sum is σ = 39232417536. Its totient is φ = 6579558144.

The previous prime is 16661024543. The next prime is 16661024563. The reversal of 16661024560 is 6542016661.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (16661024563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2856367 + ... + 2862193.

Almost surely, 2^16661024560 is an apocalyptic number.

16661024560 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 16661024560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19616208768).

16661024560 is an abundant number, since it is smaller than the sum of its proper divisors (22571392976).

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

16661024560 is a wasteful number, since it uses less digits than its factorization.

16661024560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290 (or 6284 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 16661024560 in words is "sixteen billion, six hundred sixty-one million, twenty-four thousand, five hundred sixty".