7928642865075 has 24 divisors (see below), whose sum is σ = 13113521679408. Its totient is φ = 4227050772480.

The previous prime is 7928642864981. The next prime is 7928642865079. The reversal of 7928642865075 is 5705682468297.

It is not a de Polignac number, because 7928642865075 - 2²¹ = 7928640767923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7928642865079) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19279614 + ... + 19686563.

It is an arithmetic number, because the mean of its divisors is an integer number (546396736642).

Almost surely, 2^{7928642865075} is an apocalyptic number.

7928642865075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7928642865075 is a deficient number, since it is larger than the sum of its proper divisors (5184878814333).

7928642865075 is a wasteful number, since it uses less digits than its factorization.

7928642865075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38968903 (or 38968898 counting only the distinct ones).

The product of its (nonzero) digits is 406425600, while the sum is 69.

The spelling of 7928642865075 in words is "seven trillion, nine hundred twenty-eight billion, six hundred forty-two million, eight hundred sixty-five thousand, seventy-five".