78667476688 has 20 divisors (see below), whose sum is σ = 152499411040. Its totient is φ = 39312789984.

The previous prime is 78667476631. The next prime is 78667476707. The reversal of 78667476688 is 88667476687.

It is a self number, because there is not a number n which added to its sum of digits gives 78667476688.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278270 + ... + 1338397.

It is an arithmetic number, because the mean of its divisors is an integer number (7624970552).

Almost surely, 2^78667476688 is an apocalyptic number.

It is an amenable number.

78667476688 is a deficient number, since it is larger than the sum of its proper divisors (73831934352).

78667476688 is a wasteful number, since it uses less digits than its factorization.

78667476688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618554 (or 2618548 counting only the distinct ones).

The product of its digits is 910393344, while the sum is 73.

Subtracting 78667476688 from its reverse (88667476687), we obtain a palindrome (9999999999).

The spelling of 78667476688 in words is "seventy-eight billion, six hundred sixty-seven million, four hundred seventy-six thousand, six hundred eighty-eight".