7994394024688 has 80 divisors (see below), whose sum is σ = 16369674595200. Its totient is φ = 3776786657280.

The previous prime is 7994394024623. The next prime is 7994394024709. The reversal of 7994394024688 is 8864204934997.

It is a self number, because there is not a number n which added to its sum of digits gives 7994394024688.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3177118 + ... + 5107138.

It is an arithmetic number, because the mean of its divisors is an integer number (204620932440).

Almost surely, 2^{7994394024688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7994394024688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8184837297600).

7994394024688 is an abundant number, since it is smaller than the sum of its proper divisors (8375280570512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7994394024688 is a wasteful number, since it uses less digits than its factorization.

7994394024688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930250 (or 1930244 counting only the distinct ones).

The product of its (nonzero) digits is 752467968, while the sum is 73.

The spelling of 7994394024688 in words is "seven trillion, nine hundred ninety-four billion, three hundred ninety-four million, twenty-four thousand, six hundred eighty-eight".