500544205021 has 4 divisors (see below), whose sum is σ = 572050520032. Its totient is φ = 429037890012.

The previous prime is 500544204989. The next prime is 500544205037. The reversal of 500544205021 is 120502445005.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120502445005 = 5 ⋅24100489001.

It is a cyclic number.

It is not a de Polignac number, because 500544205021 - 2⁵ = 500544204989 is a prime.

It is a super-2 number, since 2×500544205021² (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 (500542205021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35753157495 + ... + 35753157508.

It is an arithmetic number, because the mean of its divisors is an integer number (143012630008).

Almost surely, 2^500544205021 is an apocalyptic number.

It is an amenable number.

500544205021 is a deficient number, since it is larger than the sum of its proper divisors (71506315011).

500544205021 is an equidigital number, since it uses as much as digits as its factorization.

500544205021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71506315010.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 500544205021 in words is "five hundred billion, five hundred forty-four million, two hundred five thousand, twenty-one".