503042266331321 has 4 divisors (see below), whose sum is σ = 503394783688272. Its totient is φ = 502689748974372.

The previous prime is 503042266331257. The next prime is 503042266331359. The reversal of 503042266331321 is 123133662240305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 503042266331321 - 2⁶ = 503042266331257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503042266331021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176258676335 + ... + 176258679188.

It is an arithmetic number, because the mean of its divisors is an integer number (125848695922068).

Almost surely, 2^{503042266331321} is an apocalyptic number.

It is an amenable number.

503042266331321 is a deficient number, since it is larger than the sum of its proper divisors (352517356951).

503042266331321 is a wasteful number, since it uses less digits than its factorization.

503042266331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352517356950.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 503042266331321 in words is "five hundred three trillion, forty-two billion, two hundred sixty-six million, three hundred thirty-one thousand, three hundred twenty-one".