16421435433 has 36 divisors (see below), whose sum is σ = 26046738432. Its totient is φ = 9963102240.

The previous prime is 16421435357. The next prime is 16421435441. The reversal of 16421435433 is 33453412461.

16421435433 is a `hidden beast` number, since 1 + 6 + 4 + 214 + 3 + 5 + 433 = 666.

16421435433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16421435433 - 2¹⁰ = 16421434409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16421435473) 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 35 ways as a sum of consecutive naturals, for example, 31960 + ... + 184022.

It is an arithmetic number, because the mean of its divisors is an integer number (723520512).

Almost surely, 2^16421435433 is an apocalyptic number.

16421435433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16421435433 is a deficient number, since it is larger than the sum of its proper divisors (9625302999).

16421435433 is a wasteful number, since it uses less digits than its factorization.

16421435433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152166 (or 152150 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

Adding to 16421435433 its reverse (33453412461), we get a palindrome (49874847894).

The spelling of 16421435433 in words is "sixteen billion, four hundred twenty-one million, four hundred thirty-five thousand, four hundred thirty-three".