7989191322528 has 96 divisors (see below), whose sum is σ = 22585393869696. Its totient is φ = 2458151267328.

The previous prime is 7989191322517. The next prime is 7989191322589. The reversal of 7989191322528 is 8252231919897.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99728826 + ... + 99808902.

It is an arithmetic number, because the mean of its divisors is an integer number (235264519476).

Almost surely, 2^{7989191322528} is an apocalyptic number.

7989191322528 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7989191322528 is an abundant number, since it is smaller than the sum of its proper divisors (14596202547168).

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

7989191322528 is a wasteful number, since it uses less digits than its factorization.

7989191322528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160046 (or 160038 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 66.

The spelling of 7989191322528 in words is "seven trillion, nine hundred eighty-nine billion, one hundred ninety-one million, three hundred twenty-two thousand, five hundred twenty-eight".