1366278222874 has 4 divisors (see below), whose sum is σ = 2049417334314. Its totient is φ = 683139111436.

The previous prime is 1366278222853. The next prime is 1366278222877. The reversal of 1366278222874 is 4782228726631.

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., 693397617025 + 672880605849 = 832705^2 + 820293^2 .

It is not an unprimeable number, because it can be changed into a prime (1366278222877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341569555717 + ... + 341569555720.

Almost surely, 2^{1366278222874} is an apocalyptic number.

1366278222874 is a deficient number, since it is larger than the sum of its proper divisors (683139111440).

1366278222874 is an equidigital number, since it uses as much as digits as its factorization.

1366278222874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683139111439.

The product of its digits is 21676032, while the sum is 58.

The spelling of 1366278222874 in words is "one trillion, three hundred sixty-six billion, two hundred seventy-eight million, two hundred twenty-two thousand, eight hundred seventy-four".