550206443021 has 4 divisors (see below), whose sum is σ = 558418479552. Its totient is φ = 541994406492.

The previous prime is 550206442997. The next prime is 550206443029. The reversal of 550206443021 is 120344602055.

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.

It is a cyclic number.

It is not a de Polignac number, because 550206443021 - 2³⁴ = 533026573837 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 (550206443029) 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, 4106018165 + ... + 4106018298.

It is an arithmetic number, because the mean of its divisors is an integer number (139604619888).

Almost surely, 2^550206443021 is an apocalyptic number.

It is an amenable number.

550206443021 is a deficient number, since it is larger than the sum of its proper divisors (8212036531).

550206443021 is an equidigital number, since it uses as much as digits as its factorization.

550206443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8212036530.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 550206443021 in words is "five hundred fifty billion, two hundred six million, four hundred forty-three thousand, twenty-one".