16604433005405 has 16 divisors (see below), whose sum is σ = 22771958626560. Its totient is φ = 11385814522752.

The previous prime is 16604433005401. The next prime is 16604433005443. The reversal of 16604433005405 is 50450033440661.

It is a cyclic number.

It is not a de Polignac number, because 16604433005405 - 2² = 16604433005401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604433005401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3404201 + ... + 6693089.

It is an arithmetic number, because the mean of its divisors is an integer number (1423247414160).

Almost surely, 2^{16604433005405} is an apocalyptic number.

It is an amenable number.

16604433005405 is a deficient number, since it is larger than the sum of its proper divisors (6167525621155).

16604433005405 is a wasteful number, since it uses less digits than its factorization.

16604433005405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433148.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 16604433005405 in words is "sixteen trillion, six hundred four billion, four hundred thirty-three million, five thousand, four hundred five".