1387317823744 has 18 divisors (see below), whose sum is σ = 2769216437750. Its totient is φ = 693658911744.

The previous prime is 1387317823711. The next prime is 1387317823751. The reversal of 1387317823744 is 4473287137831.

It can be written as a sum of positive squares in only one way, i.e., 1053825433600 + 333492390144 = 1026560^2 + 577488^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2709604869 + ... + 2709605380.

Almost surely, 2^{1387317823744} is an apocalyptic number.

It is an amenable number.

1387317823744 is a deficient number, since it is larger than the sum of its proper divisors (1381898614006).

1387317823744 is an frugal number, since it uses more digits than its factorization.

1387317823744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5419210265 (or 5419210251 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 58.

The spelling of 1387317823744 in words is "one trillion, three hundred eighty-seven billion, three hundred seventeen million, eight hundred twenty-three thousand, seven hundred forty-four".