513323003542403 has 2 divisors, whose sum is σ = 513323003542404. Its totient is φ = 513323003542402.

The previous prime is 513323003542381. The next prime is 513323003542411. The reversal of 513323003542403 is 304245300323315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513323003542403 - 2³⁰ = 513321929800579 is a prime.

It is not a weakly prime, because it can be changed into another prime (513323003542423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256661501771201 + 256661501771202.

It is an arithmetic number, because the mean of its divisors is an integer number (256661501771202).

Almost surely, 2^{513323003542403} is an apocalyptic number.

513323003542403 is a deficient number, since it is larger than the sum of its proper divisors (1).

513323003542403 is an equidigital number, since it uses as much as digits as its factorization.

513323003542403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 38.

Adding to 513323003542403 its reverse (304245300323315), we get a palindrome (817568303865718).

The spelling of 513323003542403 in words is "five hundred thirteen trillion, three hundred twenty-three billion, three million, five hundred forty-two thousand, four hundred three".