16839820213219 has 2 divisors, whose sum is σ = 16839820213220. Its totient is φ = 16839820213218.

The previous prime is 16839820213211. The next prime is 16839820213291. The reversal of 16839820213219 is 91231202893861.

Together with next prime (16839820213291) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16839820213219 - 2³ = 16839820213211 is a prime.

It is a super-2 number, since 2×16839820213219² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16839820213219.

It is not a weakly prime, because it can be changed into another prime (16839820213211) 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 as a sum of consecutive naturals, namely, 8419910106609 + 8419910106610.

It is an arithmetic number, because the mean of its divisors is an integer number (8419910106610).

Almost surely, 2^{16839820213219} is an apocalyptic number.

16839820213219 is a deficient number, since it is larger than the sum of its proper divisors (1).

16839820213219 is an equidigital number, since it uses as much as digits as its factorization.

16839820213219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 16839820213219 in words is "sixteen trillion, eight hundred thirty-nine billion, eight hundred twenty million, two hundred thirteen thousand, two hundred nineteen".