1427738666809 has 64 divisors (see below), whose sum is σ = 1832653347840. Its totient is φ = 1081803340800.

The previous prime is 1427738666801. The next prime is 1427738666839. The reversal of 1427738666809 is 9086668377241.

It is not a de Polignac number, because 1427738666809 - 2³ = 1427738666801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1427738666801) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 301653807 + ... + 301658539.

It is an arithmetic number, because the mean of its divisors is an integer number (28635208560).

Almost surely, 2^{1427738666809} is an apocalyptic number.

It is an amenable number.

1427738666809 is a deficient number, since it is larger than the sum of its proper divisors (404914681031).

1427738666809 is a wasteful number, since it uses less digits than its factorization.

1427738666809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690.

The product of its (nonzero) digits is 146313216, while the sum is 67.

The spelling of 1427738666809 in words is "one trillion, four hundred twenty-seven billion, seven hundred thirty-eight million, six hundred sixty-six thousand, eight hundred nine".