16405325520433 has 8 divisors (see below), whose sum is σ = 16757819930880. Its totient is φ = 16056204262560.

The previous prime is 16405325520391. The next prime is 16405325520509. The reversal of 16405325520433 is 33402552350461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16405325520433 - 2³⁷ = 16267886566961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16405325520433.

It is not an unprimeable number, because it can be changed into a prime (16405325520533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843278313 + ... + 843297766.

It is an arithmetic number, because the mean of its divisors is an integer number (2094727491360).

Almost surely, 2^{16405325520433} is an apocalyptic number.

It is an amenable number.

16405325520433 is a deficient number, since it is larger than the sum of its proper divisors (352494410447).

16405325520433 is a wasteful number, since it uses less digits than its factorization.

16405325520433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686576287.

The product of its (nonzero) digits is 1296000, while the sum is 43.

Adding to 16405325520433 its reverse (33402552350461), we get a palindrome (49807877870894).

The spelling of 16405325520433 in words is "sixteen trillion, four hundred five billion, three hundred twenty-five million, five hundred twenty thousand, four hundred thirty-three".