505550555560 has 64 divisors (see below), whose sum is σ = 1170726721920. Its totient is φ = 196396273920.

The previous prime is 505550555557. The next prime is 505550555641. The reversal of 505550555560 is 65555055505.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 505550555560.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1138159 + ... + 1518718.

It is an arithmetic number, because the mean of its divisors is an integer number (18292605030).

Almost surely, 2^505550555560 is an apocalyptic number.

It is an amenable number.

505550555560 is an abundant number, since it is smaller than the sum of its proper divisors (665176166360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505550555560 is a wasteful number, since it uses less digits than its factorization.

505550555560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657026 (or 2657022 counting only the distinct ones).

The product of its (nonzero) digits is 2343750, while the sum is 46.

The spelling of 505550555560 in words is "five hundred five billion, five hundred fifty million, five hundred fifty-five thousand, five hundred sixty".