11163824281 has 27 divisors (see below), whose sum is σ = 12106641141. Its totient is φ = 10292877144.

The previous prime is 11163824279. The next prime is 11163824327. The reversal of 11163824281 is 18242836111.

The square root of 11163824281 is 105659.

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

It is not a de Polignac number, because 11163824281 - 2¹ = 11163824279 is a prime.

It is a super-2 number, since 2×11163824281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11163824281.

It is not an unprimeable number, because it can be changed into a prime (11163824201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 134503866 + ... + 134503948.

Almost surely, 2^11163824281 is an apocalyptic number.

11163824281 is the 105659-th square number.

11163824281 is the 52830-th centered octagonal number.

It is an amenable number.

11163824281 is a deficient number, since it is larger than the sum of its proper divisors (942816860).

11163824281 is an frugal number, since it uses more digits than its factorization.

11163824281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 169 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The spelling of 11163824281 in words is "eleven billion, one hundred sixty-three million, eight hundred twenty-four thousand, two hundred eighty-one".