1116661005589 has 2 divisors, whose sum is σ = 1116661005590. Its totient is φ = 1116661005588.

The previous prime is 1116661005583. The next prime is 1116661005611. The reversal of 1116661005589 is 9855001666111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 750111888100 + 366549117489 = 866090^2 + 605433^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116661005589 - 2⁵ = 1116661005557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1116661005583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558330502794 + 558330502795.

It is an arithmetic number, because the mean of its divisors is an integer number (558330502795).

Almost surely, 2^{1116661005589} is an apocalyptic number.

It is an amenable number.

1116661005589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116661005589 is an equidigital number, since it uses as much as digits as its factorization.

1116661005589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 1116661005589 in words is "one trillion, one hundred sixteen billion, six hundred sixty-one million, five thousand, five hundred eighty-nine".