550165023209 has 2 divisors, whose sum is σ = 550165023210. Its totient is φ = 550165023208.

The previous prime is 550165023197. The next prime is 550165023251. The reversal of 550165023209 is 902320561055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439144782400 + 111020240809 = 662680^2 + 333197^2 .

It is a cyclic number.

It is not a de Polignac number, because 550165023209 - 2¹² = 550165019113 is a prime.

It is not a weakly prime, because it can be changed into another prime (550165025209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275082511604 + 275082511605.

It is an arithmetic number, because the mean of its divisors is an integer number (275082511605).

Almost surely, 2^550165023209 is an apocalyptic number.

It is an amenable number.

550165023209 is a deficient number, since it is larger than the sum of its proper divisors (1).

550165023209 is an equidigital number, since it uses as much as digits as its factorization.

550165023209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 550165023209 in words is "five hundred fifty billion, one hundred sixty-five million, twenty-three thousand, two hundred nine".