505100511011 has 4 divisors (see below), whose sum is σ = 510307732872. Its totient is φ = 499893289152.

The previous prime is 505100510989. The next prime is 505100511143. The reversal of 505100511011 is 110115001505.

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 505100511011 - 2⁶ = 505100510947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505100514011) 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, 2603610785 + ... + 2603610978.

It is an arithmetic number, because the mean of its divisors is an integer number (127576933218).

Almost surely, 2^505100511011 is an apocalyptic number.

505100511011 is a deficient number, since it is larger than the sum of its proper divisors (5207221861).

505100511011 is an equidigital number, since it uses as much as digits as its factorization.

505100511011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207221860.

The product of its (nonzero) digits is 125, while the sum is 20.

Adding to 505100511011 its reverse (110115001505), we get a palindrome (615215512516).

The spelling of 505100511011 in words is "five hundred five billion, one hundred million, five hundred eleven thousand, eleven".