505406311012 has 24 divisors (see below), whose sum is σ = 915595833600. Its totient is φ = 243819618336.

The previous prime is 505406311009. The next prime is 505406311019. The reversal of 505406311012 is 210113604505.

It is not an unprimeable number, because it can be changed into a prime (505406311019) 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, 1346958 + ... + 1680805.

It is an arithmetic number, because the mean of its divisors is an integer number (38149826400).

Almost surely, 2^505406311012 is an apocalyptic number.

It is an amenable number.

505406311012 is a deficient number, since it is larger than the sum of its proper divisors (410189522588).

505406311012 is a wasteful number, since it uses less digits than its factorization.

505406311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029235 (or 3029233 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 505406311012 its reverse (210113604505), we get a palindrome (715519915517).

The spelling of 505406311012 in words is "five hundred five billion, four hundred six million, three hundred eleven thousand, twelve".