16243664832 has 560 divisors, whose sum is σ = 54767988000. Its totient is φ = 4729798656.

The previous prime is 16243664791. The next prime is 16243664837. The reversal of 16243664832 is 23846634261.

16243664832 is a `hidden beast` number, since 162 + 4 + 3 + 6 + 6 + 483 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16243664837) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 149024394 + ... + 149024502.

Almost surely, 2^16243664832 is an apocalyptic number.

16243664832 is a gapful number since it is divisible by the number (12) 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 16243664832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27383994000).

16243664832 is an abundant number, since it is smaller than the sum of its proper divisors (38524323168).

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

16243664832 is a wasteful number, since it uses less digits than its factorization.

16243664832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 239 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The spelling of 16243664832 in words is "sixteen billion, two hundred forty-three million, six hundred sixty-four thousand, eight hundred thirty-two".