16585435421073 has 24 divisors (see below), whose sum is σ = 24003984905472. Its totient is φ = 11035167591168.

The previous prime is 16585435421069. The next prime is 16585435421153. The reversal of 16585435421073 is 37012453458561.

It is a happy number.

16585435421073 is a `hidden beast` number, since 1 + 6 + 5 + 8 + 5 + 4 + 354 + 210 + 73 = 666.

It is not a de Polignac number, because 16585435421073 - 2² = 16585435421069 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16585435421063) 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 23 ways as a sum of consecutive naturals, for example, 11831940 + ... + 13159242.

It is an arithmetic number, because the mean of its divisors is an integer number (1000166037728).

Almost surely, 2^{16585435421073} is an apocalyptic number.

It is an amenable number.

16585435421073 is a deficient number, since it is larger than the sum of its proper divisors (7418549484399).

16585435421073 is a wasteful number, since it uses less digits than its factorization.

16585435421073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330045 (or 1330042 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 16585435421073 in words is "sixteen trillion, five hundred eighty-five billion, four hundred thirty-five million, four hundred twenty-one thousand, seventy-three".