16975744681 has 15 divisors (see below), whose sum is σ = 19811307741. Its totient is φ = 14545166076.

The previous prime is 16975744651. The next prime is 16975744691. The reversal of 16975744681 is 18644757961.

The square root of 16975744681 is 130291.

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

It is not a de Polignac number, because 16975744681 - 2¹¹ = 16975742633 is a prime.

It is a super-2 number, since 2×16975744681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16975744651) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6382930 + ... + 6385588.

Almost surely, 2^16975744681 is an apocalyptic number.

16975744681 is the 130291-st square number.

16975744681 is the 65146-th centered octagonal number.

It is an amenable number.

16975744681 is a deficient number, since it is larger than the sum of its proper divisors (2835563060).

16975744681 is an frugal number, since it uses more digits than its factorization.

16975744681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346 (or 2666 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The spelling of 16975744681 in words is "sixteen billion, nine hundred seventy-five million, seven hundred forty-four thousand, six hundred eighty-one".