11491738085 has 8 divisors (see below), whose sum is σ = 13926621816. Its totient is φ = 9102366400.

The previous prime is 11491738079. The next prime is 11491738087. The reversal of 11491738085 is 58083719411.

11491738085 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 4 ways, for example, as 3520998244 + 7970739841 = 59338^2 + 89279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11491738085 - 2²⁴ = 11474960869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11491738087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11377454 + ... + 11378463.

It is an arithmetic number, because the mean of its divisors is an integer number (1740827727).

Almost surely, 2^11491738085 is an apocalyptic number.

It is an amenable number.

11491738085 is a deficient number, since it is larger than the sum of its proper divisors (2434883731).

11491738085 is a wasteful number, since it uses less digits than its factorization.

11491738085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22756023.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 11491738085 in words is "eleven billion, four hundred ninety-one million, seven hundred thirty-eight thousand, eighty-five".