678143563916 has 96 divisors (see below), whose sum is σ = 1509097390080. Its totient is φ = 259387660800.

The previous prime is 678143563913. The next prime is 678143563939. The reversal of 678143563916 is 619365341876.

It is not an unprimeable number, because it can be changed into a prime (678143563913) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 12713021 + ... + 12766251.

It is an arithmetic number, because the mean of its divisors is an integer number (15719764480).

Almost surely, 2^678143563916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678143563916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754548695040).

678143563916 is an abundant number, since it is smaller than the sum of its proper divisors (830953826164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678143563916 is a wasteful number, since it uses less digits than its factorization.

678143563916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54415 (or 54413 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 59.

The spelling of 678143563916 in words is "six hundred seventy-eight billion, one hundred forty-three million, five hundred sixty-three thousand, nine hundred sixteen".