504044016221 has 32 divisors (see below), whose sum is σ = 577023678720. Its totient is φ = 437659915264.

The previous prime is 504044016191. The next prime is 504044016233. The reversal of 504044016221 is 122610440405.

It is not a de Polignac number, because 504044016221 - 2²² = 504039821917 is a prime.

It is a super-2 number, since 2×504044016221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504044016821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1016531 + ... + 1428783.

It is an arithmetic number, because the mean of its divisors is an integer number (18031989960).

Almost surely, 2^504044016221 is an apocalyptic number.

It is an amenable number.

504044016221 is a deficient number, since it is larger than the sum of its proper divisors (72979662499).

504044016221 is a wasteful number, since it uses less digits than its factorization.

504044016221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412405.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 504044016221 its reverse (122610440405), we get a palindrome (626654456626).

The spelling of 504044016221 in words is "five hundred four billion, forty-four million, sixteen thousand, two hundred twenty-one".