505560105561 has 32 divisors (see below), whose sum is σ = 771265168128. Its totient is φ = 288558766080.

The previous prime is 505560105541. The next prime is 505560105599. The reversal of 505560105561 is 165501065505.

It is not a de Polignac number, because 505560105561 - 2⁷ = 505560105433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505560105541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124612245 + ... + 124616301.

It is an arithmetic number, because the mean of its divisors is an integer number (24102036504).

Almost surely, 2^505560105561 is an apocalyptic number.

It is an amenable number.

505560105561 is a deficient number, since it is larger than the sum of its proper divisors (265705062567).

505560105561 is a wasteful number, since it uses less digits than its factorization.

505560105561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 505560105561 in words is "five hundred five billion, five hundred sixty million, one hundred five thousand, five hundred sixty-one".