78448755784486 has 32 divisors (see below), whose sum is σ = 127863995212800. Its totient is φ = 35960709961440.

The previous prime is 78448755784463. The next prime is 78448755784523. The reversal of 78448755784486 is 68448755784487.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 88035081 + ... + 88921723.

It is an arithmetic number, because the mean of its divisors is an integer number (3995749850400).

Almost surely, 2^{78448755784486} is an apocalyptic number.

78448755784486 is a deficient number, since it is larger than the sum of its proper divisors (49415239428314).

78448755784486 is a wasteful number, since it uses less digits than its factorization.

78448755784486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961804.

The product of its digits is 53949235200, while the sum is 85.

Subtracting from 78448755784486 its reverse (68448755784487), we obtain a palindrome (9999999999999).

The spelling of 78448755784486 in words is "seventy-eight trillion, four hundred forty-eight billion, seven hundred fifty-five million, seven hundred eighty-four thousand, four hundred eighty-six".