7989063993412 has 6 divisors (see below), whose sum is σ = 13980861988478. Its totient is φ = 3994531996704.

The previous prime is 7989063993409. The next prime is 7989063993431. The reversal of 7989063993412 is 2143993609897.

It can be written as a sum of positive squares in only one way, i.e., 5953922084356 + 2035141909056 = 2440066^2 + 1426584^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998632999173 + ... + 998632999180.

Almost surely, 2^{7989063993412} is an apocalyptic number.

It is an amenable number.

7989063993412 is a deficient number, since it is larger than the sum of its proper divisors (5991797995066).

7989063993412 is a wasteful number, since it uses less digits than its factorization.

7989063993412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997265998357 (or 1997265998355 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 70.

The spelling of 7989063993412 in words is "seven trillion, nine hundred eighty-nine billion, sixty-three million, nine hundred ninety-three thousand, four hundred twelve".