503344418989 has 2 divisors, whose sum is σ = 503344418990. Its totient is φ = 503344418988.

The previous prime is 503344418963. The next prime is 503344419037. The reversal of 503344418989 is 989814443305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331879688100 + 171464730889 = 576090^2 + 414083^2 .

It is a cyclic number.

It is not a de Polignac number, because 503344418989 - 2⁹ = 503344418477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503344418189) 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, 251672209494 + 251672209495.

It is an arithmetic number, because the mean of its divisors is an integer number (251672209495).

Almost surely, 2^503344418989 is an apocalyptic number.

It is an amenable number.

503344418989 is a deficient number, since it is larger than the sum of its proper divisors (1).

503344418989 is an equidigital number, since it uses as much as digits as its factorization.

503344418989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 58.

The spelling of 503344418989 in words is "five hundred three billion, three hundred forty-four million, four hundred eighteen thousand, nine hundred eighty-nine".