11083750209581 has 18 divisors (see below), whose sum is σ = 13353271098570. Its totient is φ = 9172758760032.

The previous prime is 11083750209577. The next prime is 11083750209589. The reversal of 11083750209581 is 18590205738011.

11083750209581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 903241152100 + 10180509057481 = 950390^2 + 3190691^2 .

It is not a de Polignac number, because 11083750209581 - 2² = 11083750209577 is a prime.

It is a super-2 number, since 2×11083750209581² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11083750209589) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 134440946 + ... + 134523363.

It is an arithmetic number, because the mean of its divisors is an integer number (741848394365).

Almost surely, 2^{11083750209581} is an apocalyptic number.

It is an amenable number.

11083750209581 is a deficient number, since it is larger than the sum of its proper divisors (2269520888989).

11083750209581 is an equidigital number, since it uses as much as digits as its factorization.

11083750209581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268964381 (or 268964345 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 50.

The spelling of 11083750209581 in words is "eleven trillion, eighty-three billion, seven hundred fifty million, two hundred nine thousand, five hundred eighty-one".