505005555588 has 12 divisors (see below), whose sum is σ = 1178346296400. Its totient is φ = 168335185192.

The previous prime is 505005555553. The next prime is 505005555631. The reversal of 505005555588 is 885555500505.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×505005555588² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505005555588.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21041898138 + ... + 21041898161.

It is an arithmetic number, because the mean of its divisors is an integer number (98195524700).

Almost surely, 2^505005555588 is an apocalyptic number.

It is an amenable number.

505005555588 is an abundant number, since it is smaller than the sum of its proper divisors (673340740812).

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

505005555588 is a wasteful number, since it uses less digits than its factorization.

505005555588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42083796306 (or 42083796304 counting only the distinct ones).

The product of its (nonzero) digits is 5000000, while the sum is 51.

The spelling of 505005555588 in words is "five hundred five billion, five million, five hundred fifty-five thousand, five hundred eighty-eight".