549368545863919 has 2 divisors, whose sum is σ = 549368545863920. Its totient is φ = 549368545863918.

The previous prime is 549368545863871. The next prime is 549368545863953. The reversal of 549368545863919 is 919368545863945.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 549368545863919 - 2⁹ = 549368545863407 is a prime.

It is a super-2 number, since 2×549368545863919² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549368545863119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274684272931959 + 274684272931960.

It is an arithmetic number, because the mean of its divisors is an integer number (274684272931960).

Almost surely, 2^{549368545863919} is an apocalyptic number.

549368545863919 is a deficient number, since it is larger than the sum of its proper divisors (1).

549368545863919 is an equidigital number, since it uses as much as digits as its factorization.

549368545863919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30233088000, while the sum is 85.

The spelling of 549368545863919 in words is "five hundred forty-nine trillion, three hundred sixty-eight billion, five hundred forty-five million, eight hundred sixty-three thousand, nine hundred nineteen".