16943028348481 has 9 divisors (see below), whose sum is σ = 17018934607011. Its totient is φ = 16867459197912.

The previous prime is 16943028348479. The next prime is 16943028348487. The reversal of 16943028348481 is 18484382034961.

The square root of 16943028348481 is 4116191.

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

It can be written as a sum of positive squares in only one way, i.e., 6975646911025 + 9967381437456 = 2641145^2 + 3157116^2 .

It is not a de Polignac number, because 16943028348481 - 2¹ = 16943028348479 is a prime.

It is a super-2 number, since 2×16943028348481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16943028348487) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 934366291 + ... + 934384423.

Almost surely, 2^{16943028348481} is an apocalyptic number.

16943028348481 is the 4116191-st square number.

16943028348481 is the 2058096-th centered octagonal number.

It is an amenable number.

16943028348481 is a deficient number, since it is larger than the sum of its proper divisors (75906258530).

16943028348481 is an frugal number, since it uses more digits than its factorization.

16943028348481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36720 (or 18360 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 61.

The spelling of 16943028348481 in words is "sixteen trillion, nine hundred forty-three billion, twenty-eight million, three hundred forty-eight thousand, four hundred eighty-one".