504440002321021 has 8 divisors (see below), whose sum is σ = 543417811881560. Its totient is φ = 465487154540352.

The previous prime is 504440002321019. The next prime is 504440002321063. The reversal of 504440002321021 is 120123200044405.

It can be written as a sum of positive squares in 4 ways, for example, as 8647210696996 + 495792791624025 = 2940614^2 + 22266405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 504440002321021 - 2¹ = 504440002321019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504440002321001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6240402990 + ... + 6240483823.

It is an arithmetic number, because the mean of its divisors is an integer number (67927226485195).

Almost surely, 2^{504440002321021} is an apocalyptic number.

It is an amenable number.

504440002321021 is a deficient number, since it is larger than the sum of its proper divisors (38977809560539).

504440002321021 is a wasteful number, since it uses less digits than its factorization.

504440002321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12480889935.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 504440002321021 its reverse (120123200044405), we get a palindrome (624563202365426).

The spelling of 504440002321021 in words is "five hundred four trillion, four hundred forty billion, two million, three hundred twenty-one thousand, twenty-one".