4778843388775 has 24 divisors (see below), whose sum is σ = 5974779089664. Its totient is φ = 3791490175200.

The previous prime is 4778843388719. The next prime is 4778843388779. The reversal of 4778843388775 is 5778833488774.

It is not a de Polignac number, because 4778843388775 - 2⁷ = 4778843388647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4778843388695 and 4778843388704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778843388779) 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, 4723432 + ... + 5645218.

It is an arithmetic number, because the mean of its divisors is an integer number (248949128736).

Almost surely, 2^{4778843388775} is an apocalyptic number.

4778843388775 is a deficient number, since it is larger than the sum of its proper divisors (1195935700889).

4778843388775 is a wasteful number, since it uses less digits than its factorization.

4778843388775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923511 (or 923506 counting only the distinct ones).

The product of its digits is 7080837120, while the sum is 79.

Subtracting 4778843388775 from its reverse (5778833488774), we obtain a palindrome (999990099999).

The spelling of 4778843388775 in words is "four trillion, seven hundred seventy-eight billion, eight hundred forty-three million, three hundred eighty-eight thousand, seven hundred seventy-five".