1366471816117 has 2 divisors, whose sum is σ = 1366471816118. Its totient is φ = 1366471816116.

The previous prime is 1366471816091. The next prime is 1366471816133. The reversal of 1366471816117 is 7116181746631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1366259414641 + 212401476 = 1168871^2 + 14574^2 .

It is an emirp because it is prime and its reverse (7116181746631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1366471816117 - 2¹⁵ = 1366471783349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366471819117) 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, 683235908058 + 683235908059.

It is an arithmetic number, because the mean of its divisors is an integer number (683235908059).

Almost surely, 2^{1366471816117} is an apocalyptic number.

It is an amenable number.

1366471816117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366471816117 is an equidigital number, since it uses as much as digits as its factorization.

1366471816117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 52.

The spelling of 1366471816117 in words is "one trillion, three hundred sixty-six billion, four hundred seventy-one million, eight hundred sixteen thousand, one hundred seventeen".