503420123363189 has 2 divisors, whose sum is σ = 503420123363190. Its totient is φ = 503420123363188.

The previous prime is 503420123363149. The next prime is 503420123363249. The reversal of 503420123363189 is 981363321024305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377085715503025 + 126334407860164 = 19418695^2 + 11239858^2 .

It is a cyclic number.

It is not a de Polignac number, because 503420123363189 - 2¹⁶ = 503420123297653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503420123363149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251710061681594 + 251710061681595.

It is an arithmetic number, because the mean of its divisors is an integer number (251710061681595).

Almost surely, 2^{503420123363189} is an apocalyptic number.

It is an amenable number.

503420123363189 is a deficient number, since it is larger than the sum of its proper divisors (1).

503420123363189 is an equidigital number, since it uses as much as digits as its factorization.

503420123363189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 503420123363189 in words is "five hundred three trillion, four hundred twenty billion, one hundred twenty-three million, three hundred sixty-three thousand, one hundred eighty-nine".