11501040085 has 8 divisors (see below), whose sum is σ = 13834032696. Its totient is φ = 9178975680.

The previous prime is 11501040079. The next prime is 11501040143. The reversal of 11501040085 is 58004010511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 89245809 + 11411794276 = 9447^2 + 106826^2 .

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

It is not a de Polignac number, because 11501040085 - 2⁵ = 11501040053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2729734 + ... + 2733943.

It is an arithmetic number, because the mean of its divisors is an integer number (1729254087).

Almost surely, 2^11501040085 is an apocalyptic number.

It is an amenable number.

11501040085 is a deficient number, since it is larger than the sum of its proper divisors (2332992611).

11501040085 is an equidigital number, since it uses as much as digits as its factorization.

11501040085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464103.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 11501040085 its reverse (58004010511), we get a palindrome (69505050596).

The spelling of 11501040085 in words is "eleven billion, five hundred one million, forty thousand, eighty-five".