505411440340342 has 4 divisors (see below), whose sum is σ = 758117160510516. Its totient is φ = 252705720170170.

The previous prime is 505411440340319. The next prime is 505411440340349. The reversal of 505411440340342 is 243043044114505.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 505411440340295 and 505411440340304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505411440340349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126352860085084 + ... + 126352860085087.

It is an arithmetic number, because the mean of its divisors is an integer number (189529290127629).

Almost surely, 2^{505411440340342} is an apocalyptic number.

505411440340342 is a deficient number, since it is larger than the sum of its proper divisors (252705720170174).

505411440340342 is a wasteful number, since it uses less digits than its factorization.

505411440340342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252705720170173.

The product of its (nonzero) digits is 460800, while the sum is 40.

Adding to 505411440340342 its reverse (243043044114505), we get a palindrome (748454484454847).

The spelling of 505411440340342 in words is "five hundred five trillion, four hundred eleven billion, four hundred forty million, three hundred forty thousand, three hundred forty-two".