1105805055811 has 4 divisors (see below), whose sum is σ = 1112589136072. Its totient is φ = 1099020975552.

The previous prime is 1105805055703. The next prime is 1105805055827. The reversal of 1105805055811 is 1185505085011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1105805055811 - 2¹³ = 1105805047619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105805055211) 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 in 3 ways as a sum of consecutive naturals, for example, 3392039886 + ... + 3392040211.

It is an arithmetic number, because the mean of its divisors is an integer number (278147284018).

Almost surely, 2^{1105805055811} is an apocalyptic number.

1105805055811 is a deficient number, since it is larger than the sum of its proper divisors (6784080261).

1105805055811 is an equidigital number, since it uses as much as digits as its factorization.

1105805055811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784080260.

The product of its (nonzero) digits is 40000, while the sum is 40.

The spelling of 1105805055811 in words is "one trillion, one hundred five billion, eight hundred five million, fifty-five thousand, eight hundred eleven".