11511071005 has 16 divisors (see below), whose sum is σ = 15926321664. Its totient is φ = 7823450880.

The previous prime is 11511070973. The next prime is 11511071009. The reversal of 11511071005 is 50017011511.

It is not a de Polignac number, because 11511071005 - 2⁵ = 11511070973 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 (11511071009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1451301 + ... + 1459210.

It is an arithmetic number, because the mean of its divisors is an integer number (995395104).

Almost surely, 2^11511071005 is an apocalyptic number.

It is an amenable number.

11511071005 is a deficient number, since it is larger than the sum of its proper divisors (4415250659).

11511071005 is a wasteful number, since it uses less digits than its factorization.

11511071005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910636.

The product of its (nonzero) digits is 175, while the sum is 22.

Adding to 11511071005 its reverse (50017011511), we get a palindrome (61528082516).

The spelling of 11511071005 in words is "eleven billion, five hundred eleven million, seventy-one thousand, five".