1443907697768 has 16 divisors (see below), whose sum is σ = 2718560658660. Its totient is φ = 718958188800.

The previous prime is 1443907697747. The next prime is 1443907697783. The reversal of 1443907697768 is 8677967093441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1393632192484 + 50275505284 = 1180522^2 + 224222^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374455463 + ... + 374459318.

Almost surely, 2^{1443907697768} is an apocalyptic number.

It is an amenable number.

1443907697768 is a deficient number, since it is larger than the sum of its proper divisors (1274652960892).

1443907697768 is a wasteful number, since it uses less digits than its factorization.

1443907697768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748915028 (or 748915024 counting only the distinct ones).

The product of its (nonzero) digits is 384072192, while the sum is 71.

The spelling of 1443907697768 in words is "one trillion, four hundred forty-three billion, nine hundred seven million, six hundred ninety-seven thousand, seven hundred sixty-eight".