505363111123 has 6 divisors (see below), whose sum is σ = 547227511044. Its totient is φ = 466489025496.

The previous prime is 505363111109. The next prime is 505363111129. The reversal of 505363111123 is 321111363505.

It is a de Polignac number, because none of the positive numbers 2^k-505363111123 is a prime.

It is a super-2 number, since 2×505363111123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505363111129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1495156965 + ... + 1495157302.

It is an arithmetic number, because the mean of its divisors is an integer number (91204585174).

Almost surely, 2^505363111123 is an apocalyptic number.

505363111123 is a deficient number, since it is larger than the sum of its proper divisors (41864399921).

505363111123 is a wasteful number, since it uses less digits than its factorization.

505363111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990314293 (or 2990314280 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 505363111123 its reverse (321111363505), we get a palindrome (826474474628).

The spelling of 505363111123 in words is "five hundred five billion, three hundred sixty-three million, one hundred eleven thousand, one hundred twenty-three".