1378323217274 has 4 divisors (see below), whose sum is σ = 2067484825914. Its totient is φ = 689161608636.

The previous prime is 1378323217241. The next prime is 1378323217289. The reversal of 1378323217274 is 4727123238731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1270636200625 + 107687016649 = 1127225^2 + 328157^2 .

It is an unprimeable number.

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, 344580804317 + ... + 344580804320.

Almost surely, 2^{1378323217274} is an apocalyptic number.

1378323217274 is a deficient number, since it is larger than the sum of its proper divisors (689161608640).

1378323217274 is an equidigital number, since it uses as much as digits as its factorization.

1378323217274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689161608639.

The product of its digits is 2370816, while the sum is 50.

The spelling of 1378323217274 in words is "one trillion, three hundred seventy-eight billion, three hundred twenty-three million, two hundred seventeen thousand, two hundred seventy-four".