16217969339716 has 27 divisors (see below), whose sum is σ = 29169779980887. Its totient is φ = 7889677944480.

The previous prime is 16217969339657. The next prime is 16217969339729. The reversal of 16217969339716 is 61793396971261.

The square root of 16217969339716 is 4027154.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10023366040900 + 6194603298816 = 3165970^2 + 2488896^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 297982186 + ... + 298036606.

Almost surely, 2^{16217969339716} is an apocalyptic number.

16217969339716 is the 4027154-th square number.

It is an amenable number.

16217969339716 is a deficient number, since it is larger than the sum of its proper divisors (12951810641171).

16217969339716 is an frugal number, since it uses more digits than its factorization.

16217969339716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108920 (or 54460 counting only the distinct ones).

The product of its digits is 138883248, while the sum is 70.

The spelling of 16217969339716 in words is "sixteen trillion, two hundred seventeen billion, nine hundred sixty-nine million, three hundred thirty-nine thousand, seven hundred sixteen".