16585435255963 has 4 divisors (see below), whose sum is σ = 18954783149680. Its totient is φ = 14216087362248.

The previous prime is 16585435255889. The next prime is 16585435255999. The reversal of 16585435255963 is 36955253458561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16585435255963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16585435255063) 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 3 ways as a sum of consecutive naturals, for example, 1184673946848 + ... + 1184673946861.

It is an arithmetic number, because the mean of its divisors is an integer number (4738695787420).

Almost surely, 2^{16585435255963} is an apocalyptic number.

16585435255963 is a deficient number, since it is larger than the sum of its proper divisors (2369347893717).

16585435255963 is an equidigital number, since it uses as much as digits as its factorization.

16585435255963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369347893716.

The product of its digits is 583200000, while the sum is 67.

The spelling of 16585435255963 in words is "sixteen trillion, five hundred eighty-five billion, four hundred thirty-five million, two hundred fifty-five thousand, nine hundred sixty-three".