678081381716 has 24 divisors (see below), whose sum is σ = 1203894752256. Its totient is φ = 334115731040.

The previous prime is 678081381701. The next prime is 678081381779. The reversal of 678081381716 is 617183180876.

It is a super-3 number, since 3×678081381716³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 101645 + ... + 1168971.

It is an arithmetic number, because the mean of its divisors is an integer number (50162281344).

Almost surely, 2^678081381716 is an apocalyptic number.

It is an amenable number.

678081381716 is a deficient number, since it is larger than the sum of its proper divisors (525813370540).

678081381716 is a wasteful number, since it uses less digits than its factorization.

678081381716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069639 (or 1069637 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 56.

The spelling of 678081381716 in words is "six hundred seventy-eight billion, eighty-one million, three hundred eighty-one thousand, seven hundred sixteen".