504020357127621 has 12 divisors (see below), whose sum is σ = 730657669742572. Its totient is φ = 334800526032576.

The previous prime is 504020357127601. The next prime is 504020357127691. The reversal of 504020357127621 is 126721753020405.

504020357127621 is a `hidden beast` number, since 5 + 0 + 4 + 0 + 2 + 0 + 3 + 5 + 7 + 12 + 7 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 347810004612225 + 156210352515396 = 18649665^2 + 12498414^2 .

It is not a de Polignac number, because 504020357127621 - 2⁴⁵ = 468835985038789 is a prime.

It is a super-2 number, since 2×504020357127621² (a number of 30 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 (504020357127601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101087112856 + ... + 101087117841.

Almost surely, 2^{504020357127621} is an apocalyptic number.

It is an amenable number.

504020357127621 is a deficient number, since it is larger than the sum of its proper divisors (226637312614951).

504020357127621 is a wasteful number, since it uses less digits than its factorization.

504020357127621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202174230980 (or 202174230977 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 504020357127621 in words is "five hundred four trillion, twenty billion, three hundred fifty-seven million, one hundred twenty-seven thousand, six hundred twenty-one".