678384168028 has 48 divisors (see below), whose sum is σ = 1396671704064. Its totient is φ = 282221824320.

The previous prime is 678384168017. The next prime is 678384168097. The reversal of 678384168028 is 820861483876.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313126 + ... + 1206157.

It is an arithmetic number, because the mean of its divisors is an integer number (29097327168).

Almost surely, 2^678384168028 is an apocalyptic number.

It is an amenable number.

678384168028 is an abundant number, since it is smaller than the sum of its proper divisors (718287536036).

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

678384168028 is a wasteful number, since it uses less digits than its factorization.

678384168028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519762 (or 1519760 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 61.

The spelling of 678384168028 in words is "six hundred seventy-eight billion, three hundred eighty-four million, one hundred sixty-eight thousand, twenty-eight".