550355145021 has 12 divisors (see below), whose sum is σ = 867226289280. Its totient is φ = 333548572680.

The previous prime is 550355145019. The next prime is 550355145089. The reversal of 550355145021 is 120541553055.

550355145021 is a `hidden beast` number, since 5 + 50 + 3 + 551 + 4 + 50 + 2 + 1 = 666.

It is not a de Polignac number, because 550355145021 - 2¹ = 550355145019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550355145001) 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, 2779571341 + ... + 2779571538.

It is an arithmetic number, because the mean of its divisors is an integer number (72268857440).

Almost surely, 2^550355145021 is an apocalyptic number.

It is an amenable number.

550355145021 is a deficient number, since it is larger than the sum of its proper divisors (316871144259).

550355145021 is a wasteful number, since it uses less digits than its factorization.

550355145021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559142896 (or 5559142893 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

Adding to 550355145021 its reverse (120541553055), we get a palindrome (670896698076).

The spelling of 550355145021 in words is "five hundred fifty billion, three hundred fifty-five million, one hundred forty-five thousand, twenty-one".