505818557072 has 20 divisors (see below), whose sum is σ = 987176914476. Its totient is φ = 251063224320.

The previous prime is 505818557063. The next prime is 505818557131. The reversal of 505818557072 is 270755818505.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 365691116176 + 140127440896 = 604724^2 + 374336^2 .

It is a super-5 number, since 5×505818557072⁵ (a number of 60 digits) contains 55555 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115376129 + ... + 115380512.

Almost surely, 2^505818557072 is an apocalyptic number.

It is an amenable number.

505818557072 is a deficient number, since it is larger than the sum of its proper divisors (481358357404).

505818557072 is a wasteful number, since it uses less digits than its factorization.

505818557072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230756786 (or 230756780 counting only the distinct ones).

The product of its (nonzero) digits is 3920000, while the sum is 53.

The spelling of 505818557072 in words is "five hundred five billion, eight hundred eighteen million, five hundred fifty-seven thousand, seventy-two".