17963263179481 has 3 divisors (see below), whose sum is σ = 17963267417791. Its totient is φ = 17963258941172.

The previous prime is 17963263179419. The next prime is 17963263179527. The reversal of 17963263179481 is 18497136236971.

The square root of 17963263179481 is 4238309.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 15071018743881 + 2892244435600 = 3882141^2 + 1700660^2 .

It is not a de Polignac number, because 17963263179481 - 2¹⁵ = 17963263146713 is a prime.

It is a super-2 number, since 2×17963263179481² (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 (17963263170481) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2119155 + ... + 6357463.

Almost surely, 2^{17963263179481} is an apocalyptic number.

17963263179481 is the 4238309-th square number.

17963263179481 is the 2119155-th centered octagonal number.

It is an amenable number.

17963263179481 is a deficient number, since it is larger than the sum of its proper divisors (4238310).

17963263179481 is an frugal number, since it uses more digits than its factorization.

17963263179481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476618 (or 4238309 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 67.

The spelling of 17963263179481 in words is "seventeen trillion, nine hundred sixty-three billion, two hundred sixty-three million, one hundred seventy-nine thousand, four hundred eighty-one".