16660016550 has 48 divisors (see below), whose sum is σ = 45907604880. Its totient is φ = 4442670720.

The previous prime is 16660016509. The next prime is 16660016551. The reversal of 16660016550 is 5561006661.

16660016550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16660016551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6169027 + ... + 6171726.

It is an arithmetic number, because the mean of its divisors is an integer number (956408435).

Almost surely, 2^16660016550 is an apocalyptic number.

16660016550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16660016550 is an abundant number, since it is smaller than the sum of its proper divisors (29247588330).

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

16660016550 is a wasteful number, since it uses less digits than its factorization.

16660016550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12340774 (or 12340763 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 16660016550 in words is "sixteen billion, six hundred sixty million, sixteen thousand, five hundred fifty".