503420330042909 has 2 divisors, whose sum is σ = 503420330042910. Its totient is φ = 503420330042908.

The previous prime is 503420330042753. The next prime is 503420330042921. The reversal of 503420330042909 is 909240033024305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492836226007225 + 10584104035684 = 22199915^2 + 3253322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503420330042909 is a prime.

It is a super-2 number, since 2×503420330042909² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 503420330042909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503420330042989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251710165021454 + 251710165021455.

It is an arithmetic number, because the mean of its divisors is an integer number (251710165021455).

Almost surely, 2^{503420330042909} is an apocalyptic number.

It is an amenable number.

503420330042909 is a deficient number, since it is larger than the sum of its proper divisors (1).

503420330042909 is an equidigital number, since it uses as much as digits as its factorization.

503420330042909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 503420330042909 in words is "five hundred three trillion, four hundred twenty billion, three hundred thirty million, forty-two thousand, nine hundred nine".