503603442101 has 2 divisors, whose sum is σ = 503603442102. Its totient is φ = 503603442100.

The previous prime is 503603442073. The next prime is 503603442157. The reversal of 503603442101 is 101244306305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399264751876 + 104338690225 = 631874^2 + 323015^2 .

It is a cyclic number.

It is not a de Polignac number, because 503603442101 - 2¹⁸ = 503603179957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503603442161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251801721050 + 251801721051.

It is an arithmetic number, because the mean of its divisors is an integer number (251801721051).

Almost surely, 2^503603442101 is an apocalyptic number.

It is an amenable number.

503603442101 is a deficient number, since it is larger than the sum of its proper divisors (1).

503603442101 is an equidigital number, since it uses as much as digits as its factorization.

503603442101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 503603442101 its reverse (101244306305), we get a palindrome (604847748406).

The spelling of 503603442101 in words is "five hundred three billion, six hundred three million, four hundred forty-two thousand, one hundred one".