678441717674082 has 64 divisors (see below), whose sum is σ = 1518013087920000. Its totient is φ = 224593008030144.

The previous prime is 678441717674081. The next prime is 678441717674129. The reversal of 678441717674082 is 280476717144876.

678441717674082 is a `hidden beast` number, since 6 + 7 + 8 + 4 + 41 + 7 + 176 + 7 + 408 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 678441717674082.

It is not an unprimeable number, because it can be changed into a prime (678441717674081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42746644 + ... + 56428352.

It is an arithmetic number, because the mean of its divisors is an integer number (23718954498750).

Almost surely, 2^{678441717674082} is an apocalyptic number.

678441717674082 is an abundant number, since it is smaller than the sum of its proper divisors (839571370245918).

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

678441717674082 is a wasteful number, since it uses less digits than its factorization.

678441717674082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13688032 (or 13688026 counting only the distinct ones).

The product of its (nonzero) digits is 708083712, while the sum is 72.

The spelling of 678441717674082 in words is "six hundred seventy-eight trillion, four hundred forty-one billion, seven hundred seventeen million, six hundred seventy-four thousand, eighty-two".