505505500505 has 8 divisors (see below), whose sum is σ = 606610551624. Its totient is φ = 404401766400.

The previous prime is 505505500481. The next prime is 505505500531. The reversal of 505505500505 is 505005505505.

It can be written as a sum of positive squares in 4 ways, for example, as 180145918096 + 325359582409 = 424436^2 + 570403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505505500505 - 2¹² = 505505496409 is a prime.

It is a super-2 number, since 2×505505500505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 1011545 + ... + 1426265.

It is an arithmetic number, because the mean of its divisors is an integer number (75826318953).

Almost surely, 2^505505500505 is an apocalyptic number.

It is an amenable number.

505505500505 is a deficient number, since it is larger than the sum of its proper divisors (101105051119).

505505500505 is a wasteful number, since it uses less digits than its factorization.

505505500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658507.

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 505505500505 in words is "five hundred five billion, five hundred five million, five hundred thousand, five hundred five".