11018071089 has 45 divisors (see below), whose sum is σ = 16768178427. Its totient is φ = 7209973296.

The previous prime is 11018071069. The next prime is 11018071121. The reversal of 11018071089 is 98017081011.

It is a happy number.

The square root of 11018071089 is 104967.

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., 7679542689 + 3338528400 = 87633^2 + 57780^2 .

It is not a de Polignac number, because 11018071089 - 2²¹ = 11015973937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11018071019) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 101083167 + ... + 101083275.

Almost surely, 2^11018071089 is an apocalyptic number.

11018071089 is the 104967-th square number.

11018071089 is the 52484-th centered octagonal number.

It is an amenable number.

11018071089 is a deficient number, since it is larger than the sum of its proper divisors (5750107338).

11018071089 is an frugal number, since it uses more digits than its factorization.

11018071089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 36.

Multiplying 11018071089 by its sum of digits (36), we get a square (396650559204 = 629802²).

The spelling of 11018071089 in words is "eleven billion, eighteen million, seventy-one thousand, eighty-nine".