505555555005 has 28 divisors (see below), whose sum is σ = 909583910460. Its totient is φ = 269629627392.

The previous prime is 505555554971. The next prime is 505555555007. The reversal of 505555555005 is 500555555505.

It can be written as a sum of positive squares in 2 ways, for example, as 84496025124 + 421059529881 = 290682^2 + 648891^2 .

It is not a de Polignac number, because 505555555005 - 2¹⁰ = 505555553981 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555555007) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 69345540 + ... + 69352829.

Almost surely, 2^505555555005 is an apocalyptic number.

It is an amenable number.

505555555005 is a deficient number, since it is larger than the sum of its proper divisors (404028355455).

505555555005 is an equidigital number, since it uses as much as digits as its factorization.

505555555005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138698392 (or 138698377 counting only the distinct ones).

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

It can be divided in two parts, 50555555500 and 5, that added together give a palindrome (50555555505).

The spelling of 505555555005 in words is "five hundred five billion, five hundred fifty-five million, five hundred fifty-five thousand, five".