7993384077440 has 64 divisors (see below), whose sum is σ = 19113374986560. Its totient is φ = 3196652362752.

The previous prime is 7993384077439. The next prime is 7993384077467. The reversal of 7993384077440 is 447704833997.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555499 + ... + 4290261.

It is an arithmetic number, because the mean of its divisors is an integer number (298646484165).

Almost surely, 2^{7993384077440} is an apocalyptic number.

It is an amenable number.

7993384077440 is an abundant number, since it is smaller than the sum of its proper divisors (11119990909120).

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

7993384077440 is a wasteful number, since it uses less digits than its factorization.

7993384077440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739349 (or 2739337 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 65.

The spelling of 7993384077440 in words is "seven trillion, nine hundred ninety-three billion, three hundred eighty-four million, seventy-seven thousand, four hundred forty".