1366071853789 has 2 divisors, whose sum is σ = 1366071853790. Its totient is φ = 1366071853788.

The previous prime is 1366071853787. The next prime is 1366071853793. The reversal of 1366071853789 is 9873581706631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328641212889 + 37430640900 = 1152667^2 + 193470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366071853789 - 2¹ = 1366071853787 is a prime.

Together with 1366071853787, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1366071853789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366071853787) 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, 683035926894 + 683035926895.

It is an arithmetic number, because the mean of its divisors is an integer number (683035926895).

Almost surely, 2^{1366071853789} is an apocalyptic number.

It is an amenable number.

1366071853789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366071853789 is an equidigital number, since it uses as much as digits as its factorization.

1366071853789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 1366071853789 in words is "one trillion, three hundred sixty-six billion, seventy-one million, eight hundred fifty-three thousand, seven hundred eighty-nine".