16599432672 has 144 divisors (see below), whose sum is σ = 52154837280. Its totient is φ = 4981211136.

The previous prime is 16599432659. The next prime is 16599432673. The reversal of 16599432672 is 27623499561.

16599432672 is a `hidden beast` number, since 1 + 6 + 599 + 43 + 2 + 6 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×16599432672² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16599432673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38904 + ... + 186312.

It is an arithmetic number, because the mean of its divisors is an integer number (362186370).

Almost surely, 2^16599432672 is an apocalyptic number.

16599432672 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 16599432672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26077418640).

16599432672 is an abundant number, since it is smaller than the sum of its proper divisors (35555404608).

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

16599432672 is a wasteful number, since it uses less digits than its factorization.

16599432672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147465 (or 147454 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 16599432672 in words is "sixteen billion, five hundred ninety-nine million, four hundred thirty-two thousand, six hundred seventy-two".