505011061111 has 16 divisors (see below), whose sum is σ = 537403502016. Its totient is φ = 473504967936.

The previous prime is 505011061099. The next prime is 505011061129. The reversal of 505011061111 is 111160110505.

It is a cyclic number.

It is not a de Polignac number, because 505011061111 - 2⁹ = 505011060599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505011061141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1142851 + ... + 1521883.

It is an arithmetic number, because the mean of its divisors is an integer number (33587718876).

Almost surely, 2^505011061111 is an apocalyptic number.

505011061111 is a deficient number, since it is larger than the sum of its proper divisors (32392440905).

505011061111 is a wasteful number, since it uses less digits than its factorization.

505011061111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380202.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 505011061111 its reverse (111160110505), we get a palindrome (616171171616).

The spelling of 505011061111 in words is "five hundred five billion, eleven million, sixty-one thousand, one hundred eleven".