505442400103 has 4 divisors (see below), whose sum is σ = 517196874568. Its totient is φ = 493687925640.

The previous prime is 505442400041. The next prime is 505442400107. The reversal of 505442400103 is 301004244505.

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 505442400103 - 2²⁵ = 505408845671 is a prime.

It is a super-2 number, since 2×505442400103² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505442400107) 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, 5877237168 + ... + 5877237253.

It is an arithmetic number, because the mean of its divisors is an integer number (129299218642).

Almost surely, 2^505442400103 is an apocalyptic number.

505442400103 is a deficient number, since it is larger than the sum of its proper divisors (11754474465).

505442400103 is a wasteful number, since it uses less digits than its factorization.

505442400103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11754474464.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 505442400103 its reverse (301004244505), we get a palindrome (806446644608).

The spelling of 505442400103 in words is "five hundred five billion, four hundred forty-two million, four hundred thousand, one hundred three".