11552743549 has 2 divisors, whose sum is σ = 11552743550. Its totient is φ = 11552743548.

The previous prime is 11552743481. The next prime is 11552743561. The reversal of 11552743549 is 94534725511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10388705625 + 1164037924 = 101925^2 + 34118^2 .

It is a cyclic number.

It is not a de Polignac number, because 11552743549 - 2¹⁵ = 11552710781 is a prime.

It is a super-2 number, since 2×11552743549² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11552743499 and 11552743508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11552743249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776371774 + 5776371775.

It is an arithmetic number, because the mean of its divisors is an integer number (5776371775).

Almost surely, 2^11552743549 is an apocalyptic number.

It is an amenable number.

11552743549 is a deficient number, since it is larger than the sum of its proper divisors (1).

11552743549 is an equidigital number, since it uses as much as digits as its factorization.

11552743549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 46.

The spelling of 11552743549 in words is "eleven billion, five hundred fifty-two million, seven hundred forty-three thousand, five hundred forty-nine".