11552534613 has 6 divisors (see below), whose sum is σ = 16686994454. Its totient is φ = 7701689736.

The previous prime is 11552534557. The next prime is 11552534681. The reversal of 11552534613 is 31643525511.

11552534613 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 2 + 5 + 34 + 613 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6992638884 + 4559895729 = 83622^2 + 67527^2 .

It is not a de Polignac number, because 11552534613 - 2⁶ = 11552534549 is a prime.

It is a super-2 number, since 2×11552534613² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552534683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 641807470 + ... + 641807487.

Almost surely, 2^11552534613 is an apocalyptic number.

It is an amenable number.

11552534613 is a deficient number, since it is larger than the sum of its proper divisors (5134459841).

11552534613 is a wasteful number, since it uses less digits than its factorization.

11552534613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283614963 (or 1283614960 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 11552534613 in words is "eleven billion, five hundred fifty-two million, five hundred thirty-four thousand, six hundred thirteen".