505394493505 has 8 divisors (see below), whose sum is σ = 661607337024. Its totient is φ = 367559631600.

The previous prime is 505394493503. The next prime is 505394493521.

505394493505 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505394493505 - 2¹ = 505394493503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505394493503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4594495341 + ... + 4594495450.

It is an arithmetic number, because the mean of its divisors is an integer number (82700917128).

Almost surely, 2^505394493505 is an apocalyptic number.

505394493505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505394493505 is a deficient number, since it is larger than the sum of its proper divisors (156212843519).

505394493505 is a wasteful number, since it uses less digits than its factorization.

505394493505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188990807.

The product of its (nonzero) digits is 7290000, while the sum is 52.

It can be divided in two parts, 505394 and 493505, that added together give a palindrome (998899).

The spelling of 505394493505 in words is "five hundred five billion, three hundred ninety-four million, four hundred ninety-three thousand, five hundred five".