16365618432 has 144 divisors (see below), whose sum is σ = 48995170560. Its totient is φ = 5455019520.

The previous prime is 16365618419. The next prime is 16365618439. The reversal of 16365618432 is 23481656361.

16365618432 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 561 + 84 + 3 + 2 = 666.

16365618432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16365618439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545257 + ... + 574487.

It is an arithmetic number, because the mean of its divisors is an integer number (340244240).

Almost surely, 2^16365618432 is an apocalyptic number.

16365618432 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 16365618432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24497585280).

16365618432 is an abundant number, since it is smaller than the sum of its proper divisors (32629552128).

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

16365618432 is an frugal number, since it uses more digits than its factorization.

16365618432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29268 (or 29236 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 16365618432 in words is "sixteen billion, three hundred sixty-five million, six hundred eighteen thousand, four hundred thirty-two".