11183118509689 has 9 divisors (see below), whose sum is σ = 13008961007301. Its totient is φ = 9585510086460.

The previous prime is 11183118509611. The next prime is 11183118509729. The reversal of 11183118509689 is 98690581138111.

The square root of 11183118509689 is 3344117.

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

It is not a de Polignac number, because 11183118509689 - 2¹⁹ = 11183117985401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11183118509489) 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, 23169954 + ... + 23647684.

Almost surely, 2^{11183118509689} is an apocalyptic number.

11183118509689 is the 3344117-th square number.

11183118509689 is the 1672059-th centered octagonal number.

It is an amenable number.

11183118509689 is a deficient number, since it is larger than the sum of its proper divisors (1825842497612).

11183118509689 is an frugal number, since it uses more digits than its factorization.

11183118509689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955476 (or 477738 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 61.

The spelling of 11183118509689 in words is "eleven trillion, one hundred eighty-three billion, one hundred eighteen million, five hundred nine thousand, six hundred eighty-nine".