678168613178 has 16 divisors (see below), whose sum is σ = 1163382704640. Its totient is φ = 290441706576.

The previous prime is 678168613159. The next prime is 678168613193. The reversal of 678168613178 is 871316861876.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 678168613178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16811201 + ... + 16851492.

It is an arithmetic number, because the mean of its divisors is an integer number (72711419040).

Almost surely, 2^678168613178 is an apocalyptic number.

678168613178 is a deficient number, since it is larger than the sum of its proper divisors (485214091462).

678168613178 is a wasteful number, since it uses less digits than its factorization.

678168613178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33664141.

The product of its digits is 16257024, while the sum is 62.

The spelling of 678168613178 in words is "six hundred seventy-eight billion, one hundred sixty-eight million, six hundred thirteen thousand, one hundred seventy-eight".