16839820213226 has 4 divisors (see below), whose sum is σ = 25259730319842. Its totient is φ = 8419910106612.

The previous prime is 16839820213219. The next prime is 16839820213291. The reversal of 16839820213226 is 62231202893861.

It is a Cunningham number, because it is equal to 4103635²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 16839820213225 + 1 = 4103635^2 + 1^2 .

It is an unprimeable number.

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, 4209955053305 + ... + 4209955053308.

Almost surely, 2^{16839820213226} is an apocalyptic number.

16839820213226 is a deficient number, since it is larger than the sum of its proper divisors (8419910106616).

16839820213226 is an equidigital number, since it uses as much as digits as its factorization.

16839820213226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8419910106615.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 16839820213226 in words is "sixteen trillion, eight hundred thirty-nine billion, eight hundred twenty million, two hundred thirteen thousand, two hundred twenty-six".