7993384077438 has 48 divisors (see below), whose sum is σ = 17424626034816. Its totient is φ = 2648214540240.

The previous prime is 7993384077377. The next prime is 7993384077439. The reversal of 7993384077438 is 8347704833997.

It is a happy number.

7993384077438 is a `hidden beast` number, since 7 + 9 + 93 + 38 + 4 + 0 + 77 + 438 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993384077439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28027345 + ... + 28311107.

It is an arithmetic number, because the mean of its divisors is an integer number (363013042392).

Almost surely, 2^{7993384077438} is an apocalyptic number.

7993384077438 is an abundant number, since it is smaller than the sum of its proper divisors (9431241957378).

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

7993384077438 is a wasteful number, since it uses less digits than its factorization.

7993384077438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293309 (or 293306 counting only the distinct ones).

The product of its (nonzero) digits is 768144384, while the sum is 72.

The spelling of 7993384077438 in words is "seven trillion, nine hundred ninety-three billion, three hundred eighty-four million, seventy-seven thousand, four hundred thirty-eight".