1105543409989 has 2 divisors, whose sum is σ = 1105543409990. Its totient is φ = 1105543409988.

The previous prime is 1105543409951. The next prime is 1105543410061. The reversal of 1105543409989 is 9899043455011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 589581336964 + 515962073025 = 767842^2 + 718305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105543409989 - 2³¹ = 1103395926341 is a prime.

It is a super-2 number, since 2×1105543409989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105543409939) 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, 552771704994 + 552771704995.

It is an arithmetic number, because the mean of its divisors is an integer number (552771704995).

Almost surely, 2^{1105543409989} is an apocalyptic number.

It is an amenable number.

1105543409989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105543409989 is an equidigital number, since it uses as much as digits as its factorization.

1105543409989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6998400, while the sum is 58.

The spelling of 1105543409989 in words is "one trillion, one hundred five billion, five hundred forty-three million, four hundred nine thousand, nine hundred eighty-nine".