505550555055 has 192 divisors, whose sum is σ = 1111055731968. Its totient is φ = 206928691200.

The previous prime is 505550555047. The next prime is 505550555077. The reversal of 505550555055 is 550555055505.

It is not a de Polignac number, because 505550555055 - 2³ = 505550555047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

505550555055 is a modest number, since divided by 50555055 gives 5055 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 505550555055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 51055605 + ... + 51065505.

It is an arithmetic number, because the mean of its divisors is an integer number (5786748604).

Almost surely, 2^505550555055 is an apocalyptic number.

505550555055 is an abundant number, since it is smaller than the sum of its proper divisors (605505176913).

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

505550555055 is a wasteful number, since it uses less digits than its factorization.

505550555055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10306 (or 10303 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 505550555055 in words is "five hundred five billion, five hundred fifty million, five hundred fifty-five thousand, fifty-five".