11557533443 has 2 divisors, whose sum is σ = 11557533444. Its totient is φ = 11557533442.

The previous prime is 11557533409. The next prime is 11557533461. The reversal of 11557533443 is 34433575511.

11557533443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11557533443 - 2²⁸ = 11289097987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11557533443.

It is not a weakly prime, because it can be changed into another prime (11557533643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778766721 + 5778766722.

It is an arithmetic number, because the mean of its divisors is an integer number (5778766722).

Almost surely, 2^11557533443 is an apocalyptic number.

11557533443 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557533443 is an equidigital number, since it uses as much as digits as its factorization.

11557533443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378000, while the sum is 41.

The spelling of 11557533443 in words is "eleven billion, five hundred fifty-seven million, five hundred thirty-three thousand, four hundred forty-three".