16433324431420 has 192 divisors, whose sum is σ = 39561185664000. Its totient is φ = 5683773763584.

The previous prime is 16433324431379. The next prime is 16433324431421. The reversal of 16433324431420 is 2413442333461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16433324431421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 335287876 + ... + 335336884.

It is an arithmetic number, because the mean of its divisors is an integer number (206047842000).

Almost surely, 2^{16433324431420} is an apocalyptic number.

16433324431420 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 16433324431420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19780592832000).

16433324431420 is an abundant number, since it is smaller than the sum of its proper divisors (23127861232580).

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

16433324431420 is a wasteful number, since it uses less digits than its factorization.

16433324431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49812 (or 49810 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

Adding to 16433324431420 its reverse (2413442333461), we get a palindrome (18846766764881).

The spelling of 16433324431420 in words is "sixteen trillion, four hundred thirty-three billion, three hundred twenty-four million, four hundred thirty-one thousand, four hundred twenty".