5478173220361 has 2 divisors, whose sum is σ = 5478173220362. Its totient is φ = 5478173220360.

The previous prime is 5478173220329. The next prime is 5478173220379. The reversal of 5478173220361 is 1630223718745.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3144748942336 + 2333424278025 = 1773344^2 + 1527555^2 .

It is a cyclic number.

It is not a de Polignac number, because 5478173220361 - 2⁵ = 5478173220329 is a prime.

It is not a weakly prime, because it can be changed into another prime (5478173220461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2739086610180 + 2739086610181.

It is an arithmetic number, because the mean of its divisors is an integer number (2739086610181).

Almost surely, 2^{5478173220361} is an apocalyptic number.

It is an amenable number.

5478173220361 is a deficient number, since it is larger than the sum of its proper divisors (1).

5478173220361 is an equidigital number, since it uses as much as digits as its factorization.

5478173220361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 5478173220361 in words is "five trillion, four hundred seventy-eight billion, one hundred seventy-three million, two hundred twenty thousand, three hundred sixty-one".