505404525011 has 4 divisors (see below), whose sum is σ = 505406421024. Its totient is φ = 505402629000.

The previous prime is 505404525001. The next prime is 505404525013. The reversal of 505404525011 is 110525404505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505404525011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505404525013) 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, 466715 + ... + 1108436.

It is an arithmetic number, because the mean of its divisors is an integer number (126351605256).

Almost surely, 2^505404525011 is an apocalyptic number.

505404525011 is a deficient number, since it is larger than the sum of its proper divisors (1896013).

505404525011 is a wasteful number, since it uses less digits than its factorization.

505404525011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896012.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 505404525011 its reverse (110525404505), we get a palindrome (615929929516).

The spelling of 505404525011 in words is "five hundred five billion, four hundred four million, five hundred twenty-five thousand, eleven".