550665807201 has 24 divisors (see below), whose sum is σ = 797970012840. Its totient is φ = 365928293376.

The previous prime is 550665807199. The next prime is 550665807257. The reversal of 550665807201 is 102708566055.

550665807201 is a `hidden beast` number, since 5 + 5 + 0 + 66 + 580 + 7 + 2 + 0 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 152755905600 + 397909901601 = 390840^2 + 630801^2 .

It is not a de Polignac number, because 550665807201 - 2¹ = 550665807199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (550665807101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6297955 + ... + 6384791.

It is an arithmetic number, because the mean of its divisors is an integer number (33248750535).

Almost surely, 2^550665807201 is an apocalyptic number.

It is an amenable number.

550665807201 is a deficient number, since it is larger than the sum of its proper divisors (247304205639).

550665807201 is a wasteful number, since it uses less digits than its factorization.

550665807201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89105 (or 89102 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 550665807201 in words is "five hundred fifty billion, six hundred sixty-five million, eight hundred seven thousand, two hundred one".