11511510066011 has 4 divisors (see below), whose sum is σ = 11516656027152. Its totient is φ = 11506364104872.

The previous prime is 11511510065953. The next prime is 11511510066029. The reversal of 11511510066011 is 11066001511511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11511510066011 - 2⁶ = 11511510065947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11511510066211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572977215 + ... + 2572981688.

It is an arithmetic number, because the mean of its divisors is an integer number (2879164006788).

Almost surely, 2^{11511510066011} is an apocalyptic number.

11511510066011 is a deficient number, since it is larger than the sum of its proper divisors (5145961141).

11511510066011 is an equidigital number, since it uses as much as digits as its factorization.

11511510066011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145961140.

The product of its (nonzero) digits is 900, while the sum is 29.

Adding to 11511510066011 its reverse (11066001511511), we get a palindrome (22577511577522).

The spelling of 11511510066011 in words is "eleven trillion, five hundred eleven billion, five hundred ten million, sixty-six thousand, eleven".