16533204480 has 720 divisors, whose sum is σ = 65847285504. Its totient is φ = 3810263040.

The previous prime is 16533204473. The next prime is 16533204481. The reversal of 16533204480 is 8440233561.

16533204480 is a `hidden beast` number, since 1 + 6 + 533 + 2 + 0 + 44 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16533204481) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 86561185 + ... + 86561375.

Almost surely, 2^16533204480 is an apocalyptic number.

16533204480 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 16533204480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32923642752).

16533204480 is an abundant number, since it is smaller than the sum of its proper divisors (49314081024).

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

16533204480 is a wasteful number, since it uses less digits than its factorization.

16533204480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 16533204480 in words is "sixteen billion, five hundred thirty-three million, two hundred four thousand, four hundred eighty".