550346662321 has 2 divisors, whose sum is σ = 550346662322. Its totient is φ = 550346662320.

The previous prime is 550346662289. The next prime is 550346662339. The reversal of 550346662321 is 123266643055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 546807007296 + 3539655025 = 739464^2 + 59495^2 .

It is a cyclic number.

It is not a de Polignac number, because 550346662321 - 2⁵ = 550346662289 is a prime.

It is a super-2 number, since 2×550346662321² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (550346662351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275173331160 + 275173331161.

It is an arithmetic number, because the mean of its divisors is an integer number (275173331161).

Almost surely, 2^550346662321 is an apocalyptic number.

It is an amenable number.

550346662321 is a deficient number, since it is larger than the sum of its proper divisors (1).

550346662321 is an equidigital number, since it uses as much as digits as its factorization.

550346662321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 550346662321 in words is "five hundred fifty billion, three hundred forty-six million, six hundred sixty-two thousand, three hundred twenty-one".