561316204303 has 16 divisors (see below), whose sum is σ = 589155091200. Its totient is φ = 533772683136.

The previous prime is 561316204283. The next prime is 561316204313. The reversal of 561316204303 is 303402613165.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561316204303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561316204313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585248 + ... + 2793946.

It is an arithmetic number, because the mean of its divisors is an integer number (36822193200).

Almost surely, 2^561316204303 is an apocalyptic number.

561316204303 is a deficient number, since it is larger than the sum of its proper divisors (27838886897).

561316204303 is a wasteful number, since it uses less digits than its factorization.

561316204303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209406.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 561316204303 its reverse (303402613165), we get a palindrome (864718817468).

The spelling of 561316204303 in words is "five hundred sixty-one billion, three hundred sixteen million, two hundred four thousand, three hundred three".