7928083870721 has 32 divisors (see below), whose sum is σ = 9785081069568. Its totient is φ = 6273939640320.

The previous prime is 7928083870711. The next prime is 7928083870741. The reversal of 7928083870721 is 1270783808297.

It is a cyclic number.

It is not a de Polignac number, because 7928083870721 - 2¹⁴ = 7928083854337 is a prime.

It is a super-2 number, since 2×7928083870721² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7928083870711) 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 31 ways as a sum of consecutive naturals, for example, 162176 + ... + 3985281.

It is an arithmetic number, because the mean of its divisors is an integer number (305783783424).

Almost surely, 2^{7928083870721} is an apocalyptic number.

It is an amenable number.

7928083870721 is a deficient number, since it is larger than the sum of its proper divisors (1856997198847).

7928083870721 is a wasteful number, since it uses less digits than its factorization.

7928083870721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4147901.

The product of its (nonzero) digits is 18966528, while the sum is 62.

The spelling of 7928083870721 in words is "seven trillion, nine hundred twenty-eight billion, eighty-three million, eight hundred seventy thousand, seven hundred twenty-one".