505510560011 has 4 divisors (see below), whose sum is σ = 505512708000. Its totient is φ = 505508412024.

The previous prime is 505510559969. The next prime is 505510560013. The reversal of 505510560011 is 110065015505.

It is a happy number.

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-505510560011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505510560013) 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, 670436 + ... + 1208513.

It is an arithmetic number, because the mean of its divisors is an integer number (126378177000).

Almost surely, 2^505510560011 is an apocalyptic number.

505510560011 is a deficient number, since it is larger than the sum of its proper divisors (2147989).

505510560011 is a wasteful number, since it uses less digits than its factorization.

505510560011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147988.

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 505510560011 its reverse (110065015505), we get a palindrome (615575575516).

The spelling of 505510560011 in words is "five hundred five billion, five hundred ten million, five hundred sixty thousand, eleven".