505404522011 has 4 divisors (see below), whose sum is σ = 505655844024. Its totient is φ = 505153200000.

The previous prime is 505404521989. The next prime is 505404522023. The reversal of 505404522011 is 110225404505.

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

It is a cyclic number.

It is not a de Polignac number, because 505404522011 - 2³⁴ = 488224652827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505404522061) 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, 125657990 + ... + 125662011.

It is an arithmetic number, because the mean of its divisors is an integer number (126413961006).

Almost surely, 2^505404522011 is an apocalyptic number.

505404522011 is a deficient number, since it is larger than the sum of its proper divisors (251322013).

505404522011 is a wasteful number, since it uses less digits than its factorization.

505404522011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251322012.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 505404522011 its reverse (110225404505), we get a palindrome (615629926516).

The spelling of 505404522011 in words is "five hundred five billion, four hundred four million, five hundred twenty-two thousand, eleven".