6611887543 has 2 divisors, whose sum is σ = 6611887544. Its totient is φ = 6611887542.

The previous prime is 6611887511. The next prime is 6611887553. The reversal of 6611887543 is 3457881166.

It is a happy number.

6611887543 is digitally balanced in base 3, 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 6611887543 - 2⁵ = 6611887511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6611887553) 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, 3305943771 + 3305943772.

It is an arithmetic number, because the mean of its divisors is an integer number (3305943772).

Almost surely, 2^6611887543 is an apocalyptic number.

6611887543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6611887543 is an equidigital number, since it uses as much as digits as its factorization.

6611887543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 6611887543 is about 81313.5139014420. The cubic root of 6611887543 is about 1876.9029609736.

The spelling of 6611887543 in words is "six billion, six hundred eleven million, eight hundred eighty-seven thousand, five hundred forty-three".