505533301212 has 24 divisors (see below), whose sum is σ = 1181941600000. Its totient is φ = 168173400816.

The previous prime is 505533301199. The next prime is 505533301213. The reversal of 505533301212 is 212103335505.

It is a self number, because there is not a number n which added to its sum of digits gives 505533301212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505533301213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42206212 + ... + 42218187.

Almost surely, 2^505533301212 is an apocalyptic number.

It is an amenable number.

505533301212 is an abundant number, since it is smaller than the sum of its proper divisors (676408298788).

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

505533301212 is a wasteful number, since it uses less digits than its factorization.

505533301212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84424905 (or 84424903 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 505533301212 its reverse (212103335505), we get a palindrome (717636636717).

The spelling of 505533301212 in words is "five hundred five billion, five hundred thirty-three million, three hundred one thousand, two hundred twelve".