503542342361 has 4 divisors (see below), whose sum is σ = 504003040932. Its totient is φ = 503081643792.

The previous prime is 503542342343. The next prime is 503542342367. The reversal of 503542342361 is 163243245305.

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

It can be written as a sum of positive squares in 2 ways, for example, as 289289076736 + 214253265625 = 537856^2 + 462875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503542342361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503542342367) 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 3 ways as a sum of consecutive naturals, for example, 230347646 + ... + 230349831.

It is an arithmetic number, because the mean of its divisors is an integer number (126000760233).

Almost surely, 2^503542342361 is an apocalyptic number.

It is an amenable number.

503542342361 is a deficient number, since it is larger than the sum of its proper divisors (460698571).

503542342361 is a wasteful number, since it uses less digits than its factorization.

503542342361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460698570.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 503542342361 its reverse (163243245305), we get a palindrome (666785587666).

The spelling of 503542342361 in words is "five hundred three billion, five hundred forty-two million, three hundred forty-two thousand, three hundred sixty-one".