505555505050 has 48 divisors (see below), whose sum is σ = 982390080600. Its totient is φ = 193315808000.

The previous prime is 505555505017. The next prime is 505555505053. The reversal of 505555505050 is 50505555505.

It can be written as a sum of positive squares in 12 ways, for example, as 160336977241 + 345218527809 = 400421^2 + 587553^2 .

It is a junction number, because it is equal to n+sod(n) for n = 505555504994 and 505555505012.

It is not an unprimeable number, because it can be changed into a prime (505555505053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1579585 + ... + 1872484.

Almost surely, 2^505555505050 is an apocalyptic number.

505555505050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505555505050 is a deficient number, since it is larger than the sum of its proper divisors (476834575550).

505555505050 is a wasteful number, since it uses less digits than its factorization.

505555505050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452211 (or 3452206 counting only the distinct ones).

The product of its (nonzero) digits is 390625, while the sum is 40.

It can be divided in two parts, 505 and 555505050, that added together give a palindrome (555505555).

The spelling of 505555505050 in words is "five hundred five billion, five hundred fifty-five million, five hundred five thousand, fifty".