678890612889 has 12 divisors (see below), whose sum is σ = 981700954416. Its totient is φ = 452094735672.

The previous prime is 678890612801. The next prime is 678890612957. The reversal of 678890612889 is 988216098876.

It is not a de Polignac number, because 678890612889 - 2¹¹ = 678890610841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678890602889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41575239 + ... + 41591564.

It is an arithmetic number, because the mean of its divisors is an integer number (81808412868).

Almost surely, 2^678890612889 is an apocalyptic number.

It is an amenable number.

678890612889 is a deficient number, since it is larger than the sum of its proper divisors (302810341527).

678890612889 is a wasteful number, since it uses less digits than its factorization.

678890612889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83167716 (or 83167713 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 72.

The spelling of 678890612889 in words is "six hundred seventy-eight billion, eight hundred ninety million, six hundred twelve thousand, eight hundred eighty-nine".