678826870618 has 16 divisors (see below), whose sum is σ = 1144243287936. Its totient is φ = 299682765360.

The previous prime is 678826870609. The next prime is 678826870619. The reversal of 678826870618 is 816078628876.

It is not an unprimeable number, because it can be changed into a prime (678826870619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 567580398 + ... + 567581593.

It is an arithmetic number, because the mean of its divisors is an integer number (71515205496).

Almost surely, 2^678826870618 is an apocalyptic number.

678826870618 is a deficient number, since it is larger than the sum of its proper divisors (465416417318).

678826870618 is a wasteful number, since it uses less digits than its factorization.

678826870618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135162029.

The product of its (nonzero) digits is 86704128, while the sum is 67.

The spelling of 678826870618 in words is "six hundred seventy-eight billion, eight hundred twenty-six million, eight hundred seventy thousand, six hundred eighteen".