7848994784378 has 16 divisors (see below), whose sum is σ = 12858289735104. Its totient is φ = 3563702655360.

The previous prime is 7848994784357. The next prime is 7848994784399. The reversal of 7848994784378 is 8734874998487.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7848994784357) and next prime (7848994784399).

It is a self number, because there is not a number n which added to its sum of digits gives 7848994784378.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 201092375 + ... + 201131402.

It is an arithmetic number, because the mean of its divisors is an integer number (803643108444).

Almost surely, 2^{7848994784378} is an apocalyptic number.

7848994784378 is a deficient number, since it is larger than the sum of its proper divisors (5009294950726).

7848994784378 is a wasteful number, since it uses less digits than its factorization.

7848994784378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402224677.

The product of its digits is 21849440256, while the sum is 86.

The spelling of 7848994784378 in words is "seven trillion, eight hundred forty-eight billion, nine hundred ninety-four million, seven hundred eighty-four thousand, three hundred seventy-eight".