678881720712 has 32 divisors (see below), whose sum is σ = 1827758479680. Its totient is φ = 208886683200.

The previous prime is 678881720711. The next prime is 678881720723. The reversal of 678881720712 is 217027188876.

It is not an unprimeable number, because it can be changed into a prime (678881720711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1087951164 + ... + 1087951787.

It is an arithmetic number, because the mean of its divisors is an integer number (57117452490).

Almost surely, 2^678881720712 is an apocalyptic number.

It is an amenable number.

678881720712 is an abundant number, since it is smaller than the sum of its proper divisors (1148876758968).

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

678881720712 is a wasteful number, since it uses less digits than its factorization.

678881720712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175902973 (or 2175902969 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 57.

The spelling of 678881720712 in words is "six hundred seventy-eight billion, eight hundred eighty-one million, seven hundred twenty thousand, seven hundred twelve".