16663630360 has 128 divisors (see below), whose sum is σ = 41269798080. Its totient is φ = 6017476608.

The previous prime is 16663630351. The next prime is 16663630421. The reversal of 16663630360 is 6303636661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10940559 + ... + 10942081.

Almost surely, 2^16663630360 is an apocalyptic number.

16663630360 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 16663630360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20634899040).

16663630360 is an abundant number, since it is smaller than the sum of its proper divisors (24606167720).

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

16663630360 is a wasteful number, since it uses less digits than its factorization.

16663630360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 40.

The spelling of 16663630360 in words is "sixteen billion, six hundred sixty-three million, six hundred thirty thousand, three hundred sixty".