503053212502321 has 16 divisors (see below), whose sum is σ = 589120406383824. Its totient is φ = 425229767000064.

The previous prime is 503053212502283. The next prime is 503053212502391. The reversal of 503053212502321 is 123205212350305.

It can be written as a sum of positive squares in 8 ways, for example, as 40199467493025 + 462853745009296 = 6340305^2 + 21514036^2 .

It is not a de Polignac number, because 503053212502321 - 2⁷ = 503053212502193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503053212502391) 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 in 15 ways as a sum of consecutive naturals, for example, 30760246960 + ... + 30760263313.

It is an arithmetic number, because the mean of its divisors is an integer number (36820025398989).

Almost surely, 2^{503053212502321} is an apocalyptic number.

It is an amenable number.

503053212502321 is a deficient number, since it is larger than the sum of its proper divisors (86067193881503).

503053212502321 is a wasteful number, since it uses less digits than its factorization.

503053212502321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61520510340.

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 503053212502321 its reverse (123205212350305), we get a palindrome (626258424852626).

The spelling of 503053212502321 in words is "five hundred three trillion, fifty-three billion, two hundred twelve million, five hundred two thousand, three hundred twenty-one".