1105605550561 has 4 divisors (see below), whose sum is σ = 1163795316400. Its totient is φ = 1047415784724.

The previous prime is 1105605550529. The next prime is 1105605550583. The reversal of 1105605550561 is 1650555065011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1105605550561 - 2⁵ = 1105605550529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1105605550261) 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, 29094882891 + ... + 29094882928.

It is an arithmetic number, because the mean of its divisors is an integer number (290948829100).

Almost surely, 2^{1105605550561} is an apocalyptic number.

It is an amenable number.

1105605550561 is a deficient number, since it is larger than the sum of its proper divisors (58189765839).

1105605550561 is an equidigital number, since it uses as much as digits as its factorization.

1105605550561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58189765838.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 1105605550561 in words is "one trillion, one hundred five billion, six hundred five million, five hundred fifty thousand, five hundred sixty-one".