505104099505 has 4 divisors (see below), whose sum is σ = 606124919412. Its totient is φ = 404083279600.

The previous prime is 505104099497. The next prime is 505104099509. The reversal of 505104099505 is 505990401505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 343063232656 + 162040866849 = 585716^2 + 402543^2 .

It is not a de Polignac number, because 505104099505 - 2³ = 505104099497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505104099509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50510409946 + ... + 50510409955.

It is an arithmetic number, because the mean of its divisors is an integer number (151531229853).

Almost surely, 2^505104099505 is an apocalyptic number.

It is an amenable number.

505104099505 is a deficient number, since it is larger than the sum of its proper divisors (101020819907).

505104099505 is a wasteful number, since it uses less digits than its factorization.

505104099505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101020819906.

The product of its (nonzero) digits is 202500, while the sum is 43.

The spelling of 505104099505 in words is "five hundred five billion, one hundred four million, ninety-nine thousand, five hundred five".