1366109457489 has 12 divisors (see below), whose sum is σ = 2255164818816. Its totient is φ = 780633975672.

The previous prime is 1366109457481. The next prime is 1366109457491. The reversal of 1366109457489 is 9847549016631.

1366109457489 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 10 + 94 + 57 + 489 = 666.

It is not a de Polignac number, because 1366109457489 - 2³ = 1366109457481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 21684277103 = 1366109457489 / (1 + 3 + 6 + 6 + 1 + 0 + 9 + 4 + 5 + 7 + 4 + 8 + 9).

It is not an unprimeable number, because it can be changed into a prime (1366109457481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10842138489 + ... + 10842138614.

It is an arithmetic number, because the mean of its divisors is an integer number (187930401568).

Almost surely, 2^{1366109457489} is an apocalyptic number.

It is an amenable number.

1366109457489 is a deficient number, since it is larger than the sum of its proper divisors (889055361327).

1366109457489 is a wasteful number, since it uses less digits than its factorization.

1366109457489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21684277116 (or 21684277113 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 1366109457489 in words is "one trillion, three hundred sixty-six billion, one hundred nine million, four hundred fifty-seven thousand, four hundred eighty-nine".