16320455424 has 756 divisors, whose sum is σ = 62116693968. Its totient is φ = 4165447680.

The previous prime is 16320455383. The next prime is 16320455453. The reversal of 16320455424 is 42455402361.

16320455424 is a `hidden beast` number, since 1 + 63 + 20 + 4 + 554 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (756).

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

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 526466289 + ... + 526466319.

Almost surely, 2^16320455424 is an apocalyptic number.

16320455424 is a gapful number since it is divisible by the number (14) 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 16320455424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31058346984).

16320455424 is an abundant number, since it is smaller than the sum of its proper divisors (45796238544).

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

16320455424 is an frugal number, since it uses more digits than its factorization.

16320455424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 16320455424 its reverse (42455402361), we get a palindrome (58775857785).

The spelling of 16320455424 in words is "sixteen billion, three hundred twenty million, four hundred fifty-five thousand, four hundred twenty-four".