16818445259 has 8 divisors (see below), whose sum is σ = 20968451328. Its totient is φ = 13105281960.

The previous prime is 16818445249. The next prime is 16818445277. The reversal of 16818445259 is 95254481861.

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 16818445259 - 2²⁰ = 16817396683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16818445259.

It is not an unprimeable number, because it can be changed into a prime (16818445229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109210607 + ... + 109210760.

It is an arithmetic number, because the mean of its divisors is an integer number (2621056416).

Almost surely, 2^16818445259 is an apocalyptic number.

16818445259 is a deficient number, since it is larger than the sum of its proper divisors (4150006069).

16818445259 is a wasteful number, since it uses less digits than its factorization.

16818445259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218421385.

The product of its digits is 2764800, while the sum is 53.

The spelling of 16818445259 in words is "sixteen billion, eight hundred eighteen million, four hundred forty-five thousand, two hundred fifty-nine".