16440873659 has 8 divisors (see below), whose sum is σ = 19097596128. Its totient is φ = 13861157760.

The previous prime is 16440873643. The next prime is 16440873661. The reversal of 16440873659 is 95637804461.

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 16440873659 - 2⁴ = 16440873643 is a prime.

It is a super-3 number, since 3×16440873659³ (a number of 32 digits) contains 333 as substring.

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 16440873659.

It is not an unprimeable number, because it can be changed into a prime (16440872659) 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 7 ways as a sum of consecutive naturals, for example, 19251182 + ... + 19252035.

It is an arithmetic number, because the mean of its divisors is an integer number (2387199516).

Almost surely, 2^16440873659 is an apocalyptic number.

16440873659 is a deficient number, since it is larger than the sum of its proper divisors (2656722469).

16440873659 is an equidigital number, since it uses as much as digits as its factorization.

16440873659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38503285.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 16440873659 in words is "sixteen billion, four hundred forty million, eight hundred seventy-three thousand, six hundred fifty-nine".