11173240081 has 8 divisors (see below), whose sum is σ = 11672198784. Its totient is φ = 10675378560.

The previous prime is 11173240019. The next prime is 11173240097. The reversal of 11173240081 is 18004237111.

11173240081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11173240081 - 2²⁵ = 11139685649 is a prime.

It is a super-2 number, since 2×11173240081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11173240181) 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, 253440 + ... + 294241.

It is an arithmetic number, because the mean of its divisors is an integer number (1459024848).

Almost surely, 2^11173240081 is an apocalyptic number.

It is an amenable number.

11173240081 is a deficient number, since it is larger than the sum of its proper divisors (498958703).

11173240081 is an equidigital number, since it uses as much as digits as its factorization.

11173240081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548591.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 11173240081 its reverse (18004237111), we get a palindrome (29177477192).

The spelling of 11173240081 in words is "eleven billion, one hundred seventy-three million, two hundred forty thousand, eighty-one".