505212040424 has 64 divisors (see below), whose sum is σ = 1216564151040. Its totient is φ = 191174353920.

The previous prime is 505212040379. The next prime is 505212040453. The reversal of 505212040424 is 424040212505.

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 15 ways as a sum of consecutive naturals, for example, 15069617 + ... + 15103104.

It is an arithmetic number, because the mean of its divisors is an integer number (19008814860).

Almost surely, 2^505212040424 is an apocalyptic number.

It is an amenable number.

505212040424 is an abundant number, since it is smaller than the sum of its proper divisors (711352110616).

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

505212040424 is a wasteful number, since it uses less digits than its factorization.

505212040424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30172770 (or 30172766 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 505212040424 its reverse (424040212505), we get a palindrome (929252252929).

The spelling of 505212040424 in words is "five hundred five billion, two hundred twelve million, forty thousand, four hundred twenty-four".