503420330043901 has 2 divisors, whose sum is σ = 503420330043902. Its totient is φ = 503420330043900.

The previous prime is 503420330043781. The next prime is 503420330043913. The reversal of 503420330043901 is 109340033024305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 284813045724025 + 218607284319876 = 16876405^2 + 14785374^2 .

It is a cyclic number.

It is not a de Polignac number, because 503420330043901 - 2¹⁵ = 503420330011133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503420330043941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251710165021950 + 251710165021951.

It is an arithmetic number, because the mean of its divisors is an integer number (251710165021951).

Almost surely, 2^{503420330043901} is an apocalyptic number.

It is an amenable number.

503420330043901 is a deficient number, since it is larger than the sum of its proper divisors (1).

503420330043901 is an equidigital number, since it uses as much as digits as its factorization.

503420330043901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 37.

The spelling of 503420330043901 in words is "five hundred three trillion, four hundred twenty billion, three hundred thirty million, forty-three thousand, nine hundred one".