505501011105011 has 4 divisors (see below), whose sum is σ = 505552159653912. Its totient is φ = 505449862556112.

The previous prime is 505501011105001. The next prime is 505501011105029. The reversal of 505501011105011 is 110501110105505.

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 505501011105011 - 2¹⁰ = 505501011103987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505501011105001) 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, 25574259626 + ... + 25574279391.

It is an arithmetic number, because the mean of its divisors is an integer number (126388039913478).

Almost surely, 2^{505501011105011} is an apocalyptic number.

505501011105011 is a deficient number, since it is larger than the sum of its proper divisors (51148548901).

505501011105011 is an equidigital number, since it uses as much as digits as its factorization.

505501011105011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51148548900.

The product of its (nonzero) digits is 625, while the sum is 26.

The spelling of 505501011105011 in words is "five hundred five trillion, five hundred one billion, eleven million, one hundred five thousand, eleven".