505115455011 has 4 divisors (see below), whose sum is σ = 673487273352. Its totient is φ = 336743636672.

The previous prime is 505115454997. The next prime is 505115455063. The reversal of 505115455011 is 110554511505.

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 505115455011 - 2⁵ = 505115454979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505115450011) 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, 84185909166 + ... + 84185909171.

It is an arithmetic number, because the mean of its divisors is an integer number (168371818338).

Almost surely, 2^505115455011 is an apocalyptic number.

505115455011 is a deficient number, since it is larger than the sum of its proper divisors (168371818341).

505115455011 is a wasteful number, since it uses less digits than its factorization.

505115455011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168371818340.

The product of its (nonzero) digits is 12500, while the sum is 33.

Adding to 505115455011 its reverse (110554511505), we get a palindrome (615669966516).

The spelling of 505115455011 in words is "five hundred five billion, one hundred fifteen million, four hundred fifty-five thousand, eleven".