1109536681843 has 2 divisors, whose sum is σ = 1109536681844. Its totient is φ = 1109536681842.

The previous prime is 1109536681777. The next prime is 1109536681919. The reversal of 1109536681843 is 3481866359011.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109536681843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1109536681343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554768340921 + 554768340922.

It is an arithmetic number, because the mean of its divisors is an integer number (554768340922).

Almost surely, 2^{1109536681843} is an apocalyptic number.

1109536681843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109536681843 is an equidigital number, since it uses as much as digits as its factorization.

1109536681843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 1109536681843 in words is "one trillion, one hundred nine billion, five hundred thirty-six million, six hundred eighty-one thousand, eight hundred forty-three".