11552532513 has 32 divisors (see below), whose sum is σ = 16407135360. Its totient is φ = 7209861120.

The previous prime is 11552532491. The next prime is 11552532559. The reversal of 11552532513 is 31523525511.

It is a happy number.

It is not a de Polignac number, because 11552532513 - 2⁹ = 11552532001 is a prime.

It is a super-2 number, since 2×11552532513² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11552532613) 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 in 31 ways as a sum of consecutive naturals, for example, 2271133 + ... + 2276213.

It is an arithmetic number, because the mean of its divisors is an integer number (512722980).

Almost surely, 2^11552532513 is an apocalyptic number.

It is an amenable number.

11552532513 is a deficient number, since it is larger than the sum of its proper divisors (4854602847).

11552532513 is a wasteful number, since it uses less digits than its factorization.

11552532513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569.

The product of its digits is 22500, while the sum is 33.

The spelling of 11552532513 in words is "eleven billion, five hundred fifty-two million, five hundred thirty-two thousand, five hundred thirteen".