505500555111 has 8 divisors (see below), whose sum is σ = 674149972464. Its totient is φ = 336925753920.

The previous prime is 505500555029. The next prime is 505500555143. The reversal of 505500555111 is 111555005505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 505500555111 - 2²³ = 505492166503 is a prime.

It is a super-2 number, since 2×505500555111² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505500555211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18638230 + ... + 18665331.

It is an arithmetic number, because the mean of its divisors is an integer number (84268746558).

Almost surely, 2^505500555111 is an apocalyptic number.

505500555111 is a deficient number, since it is larger than the sum of its proper divisors (168649417353).

505500555111 is a wasteful number, since it uses less digits than its factorization.

505500555111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37308081.

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 505500555111 in words is "five hundred five billion, five hundred million, five hundred fifty-five thousand, one hundred eleven".