78443108368 has 40 divisors (see below), whose sum is σ = 152962024536. Its totient is φ = 38969548800.

The previous prime is 78443108323. The next prime is 78443108389. The reversal of 78443108368 is 86380134487.

It can be written as a sum of positive squares in 4 ways, for example, as 61027344 + 78382081024 = 7812^2 + 279968^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519778 + ... + 2550718.

Almost surely, 2^78443108368 is an apocalyptic number.

It is an amenable number.

78443108368 is a deficient number, since it is larger than the sum of its proper divisors (74518916168).

78443108368 is a wasteful number, since it uses less digits than its factorization.

78443108368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31963 (or 31957 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 78443108368 in words is "seventy-eight billion, four hundred forty-three million, one hundred eight thousand, three hundred sixty-eight".