16505443080 has 768 divisors, whose sum is σ = 67025387520. Its totient is φ = 3441512448.

The previous prime is 16505443067. The next prime is 16505443121. The reversal of 16505443080 is 8034450561.

It is a happy number.

16505443080 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 544 + 30 + 80 = 666.

16505443080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 198860719 + ... + 198860801.

It is an arithmetic number, because the mean of its divisors is an integer number (87272640).

Almost surely, 2^16505443080 is an apocalyptic number.

16505443080 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 16505443080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33512693760).

16505443080 is an abundant number, since it is smaller than the sum of its proper divisors (50519944440).

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

16505443080 is a wasteful number, since it uses less digits than its factorization.

16505443080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 16505443080 in words is "sixteen billion, five hundred five million, four hundred forty-three thousand, eighty".