504406004600321 has 4 divisors (see below), whose sum is σ = 505094143761492. Its totient is φ = 503717865439152.

The previous prime is 504406004600297. The next prime is 504406004600327. The reversal of 504406004600321 is 123006400604405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325056055134721 + 179349949465600 = 18029311^2 + 13392160^2 .

It is a cyclic number.

It is not a de Polignac number, because 504406004600321 - 2²² = 504406000406017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (504406004600327) 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, 344069579486 + ... + 344069580951.

It is an arithmetic number, because the mean of its divisors is an integer number (126273535940373).

Almost surely, 2^{504406004600321} is an apocalyptic number.

It is an amenable number.

504406004600321 is a deficient number, since it is larger than the sum of its proper divisors (688139161171).

504406004600321 is an equidigital number, since it uses as much as digits as its factorization.

504406004600321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688139161170.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 504406004600321 in words is "five hundred four trillion, four hundred six billion, four million, six hundred thousand, three hundred twenty-one".