561005561105 has 64 divisors (see below), whose sum is σ = 773506838016. Its totient is φ = 386631168000.

The previous prime is 561005561071. The next prime is 561005561107. The reversal of 561005561105 is 501165500165.

It is not a de Polignac number, because 561005561105 - 2⁶ = 561005561041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561005561107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60053735 + ... + 60063075.

It is an arithmetic number, because the mean of its divisors is an integer number (12086044344).

Almost surely, 2^561005561105 is an apocalyptic number.

561005561105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561005561105 is a deficient number, since it is larger than the sum of its proper divisors (212501276911).

561005561105 is a wasteful number, since it uses less digits than its factorization.

561005561105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9818.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 561005561105 in words is "five hundred sixty-one billion, five million, five hundred sixty-one thousand, one hundred five".