3978072659075 has 6 divisors (see below), whose sum is σ = 4932810097284. Its totient is φ = 3182458127240.

The previous prime is 3978072659039. The next prime is 3978072659081. The reversal of 3978072659075 is 5709562708793.

It is not a de Polignac number, because 3978072659075 - 2¹² = 3978072654979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3978072658996 and 3978072659014.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 79561453157 + ... + 79561453206.

It is an arithmetic number, because the mean of its divisors is an integer number (822135016214).

Almost surely, 2^{3978072659075} is an apocalyptic number.

3978072659075 is a deficient number, since it is larger than the sum of its proper divisors (954737438209).

3978072659075 is a wasteful number, since it uses less digits than its factorization.

3978072659075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159122906373 (or 159122906368 counting only the distinct ones).

The product of its (nonzero) digits is 200037600, while the sum is 68.

The spelling of 3978072659075 in words is "three trillion, nine hundred seventy-eight billion, seventy-two million, six hundred fifty-nine thousand, seventy-five".