16585231899 has 8 divisors (see below), whose sum is σ = 22127307840. Its totient is φ = 11049988616.

The previous prime is 16585231889. The next prime is 16585231903. The reversal of 16585231899 is 99813258561.

It is a happy number.

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 16585231899 - 2⁹ = 16585231387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16585231889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1702497 + ... + 1712210.

It is an arithmetic number, because the mean of its divisors is an integer number (2765913480).

Almost surely, 2^16585231899 is an apocalyptic number.

16585231899 is a deficient number, since it is larger than the sum of its proper divisors (5542075941).

16585231899 is a wasteful number, since it uses less digits than its factorization.

16585231899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416329.

The product of its digits is 4665600, while the sum is 57.

The spelling of 16585231899 in words is "sixteen billion, five hundred eighty-five million, two hundred thirty-one thousand, eight hundred ninety-nine".