11511173152 has 12 divisors (see below), whose sum is σ = 22662622206. Its totient is φ = 5755586560.

The previous prime is 11511173117. The next prime is 11511173159. The reversal of 11511173152 is 25137111511.

It can be written as a sum of positive squares in only one way, i.e., 6566833296 + 4944339856 = 81036^2 + 70316^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11511173152.

It is not an unprimeable number, because it can be changed into a prime (11511173159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179862049 + ... + 179862112.

Almost surely, 2^11511173152 is an apocalyptic number.

It is an amenable number.

11511173152 is a deficient number, since it is larger than the sum of its proper divisors (11151449054).

11511173152 is an equidigital number, since it uses as much as digits as its factorization.

11511173152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359724171 (or 359724163 counting only the distinct ones).

The product of its digits is 1050, while the sum is 28.

Adding to 11511173152 its reverse (25137111511), we get a palindrome (36648284663).

The spelling of 11511173152 in words is "eleven billion, five hundred eleven million, one hundred seventy-three thousand, one hundred fifty-two".