1378323217273 has 16 divisors (see below), whose sum is σ = 1385016708096. Its totient is φ = 1371651641280.

The previous prime is 1378323217241. The next prime is 1378323217289. The reversal of 1378323217273 is 3727123238731.

It is a cyclic number.

It is not a de Polignac number, because 1378323217273 - 2⁵ = 1378323217241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378323217673) 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 in 15 ways as a sum of consecutive naturals, for example, 293070840 + ... + 293075542.

It is an arithmetic number, because the mean of its divisors is an integer number (86563544256).

Almost surely, 2^{1378323217273} is an apocalyptic number.

It is an amenable number.

1378323217273 is a deficient number, since it is larger than the sum of its proper divisors (6693490823).

1378323217273 is an equidigital number, since it uses as much as digits as its factorization.

1378323217273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744.

The product of its digits is 1778112, while the sum is 49.

The spelling of 1378323217273 in words is "one trillion, three hundred seventy-eight billion, three hundred twenty-three million, two hundred seventeen thousand, two hundred seventy-three".