505406205064 has 32 divisors (see below), whose sum is σ = 983664720000. Its totient is φ = 243271897920.

The previous prime is 505406205047. The next prime is 505406205079. The reversal of 505406205064 is 460502604505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10994814 + ... + 11040685.

It is an arithmetic number, because the mean of its divisors is an integer number (30739522500).

Almost surely, 2^505406205064 is an apocalyptic number.

It is an amenable number.

505406205064 is a deficient number, since it is larger than the sum of its proper divisors (478258514936).

505406205064 is a wasteful number, since it uses less digits than its factorization.

505406205064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22035613 (or 22035609 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 505406205064 its reverse (460502604505), we get a palindrome (965908809569).

The spelling of 505406205064 in words is "five hundred five billion, four hundred six million, two hundred five thousand, sixty-four".