16838705217 has 32 divisors (see below), whose sum is σ = 24395817600. Its totient is φ = 10294760448.

The previous prime is 16838705189. The next prime is 16838705231. The reversal of 16838705217 is 71250783861.

It is a happy number.

It is not a de Polignac number, because 16838705217 - 2¹⁰ = 16838704193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16838705287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395209 + ... + 435737.

It is an arithmetic number, because the mean of its divisors is an integer number (762369300).

Almost surely, 2^16838705217 is an apocalyptic number.

It is an amenable number.

16838705217 is a deficient number, since it is larger than the sum of its proper divisors (7557112383).

16838705217 is a wasteful number, since it uses less digits than its factorization.

16838705217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40785.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 16838705217 in words is "sixteen billion, eight hundred thirty-eight million, seven hundred five thousand, two hundred seventeen".