16503448800 has 144 divisors (see below), whose sum is σ = 53857146672. Its totient is φ = 4389580800.

The previous prime is 16503448799. The next prime is 16503448817. The reversal of 16503448800 is 884430561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 944140 + ... + 961460.

It is an arithmetic number, because the mean of its divisors is an integer number (374007963).

Almost surely, 2^16503448800 is an apocalyptic number.

16503448800 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 16503448800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26928573336).

16503448800 is an abundant number, since it is smaller than the sum of its proper divisors (37353697872).

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

16503448800 is a wasteful number, since it uses less digits than its factorization.

16503448800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17741 (or 17728 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 16503448800 in words is "sixteen billion, five hundred three million, four hundred forty-eight thousand, eight hundred".