678381348672 has 448 divisors, whose sum is σ = 2189936793600. Its totient is φ = 204997754880.

The previous prime is 678381348571. The next prime is 678381348679. The reversal of 678381348672 is 276843183876.

678381348672 is a `hidden beast` number, since 6 + 7 + 8 + 3 + 81 + 3 + 486 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678381348679) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 208538598 + ... + 208541850.

Almost surely, 2^678381348672 is an apocalyptic number.

678381348672 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678381348672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1094968396800).

678381348672 is an abundant number, since it is smaller than the sum of its proper divisors (1511555444928).

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

678381348672 is a wasteful number, since it uses less digits than its factorization.

678381348672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551 (or 3535 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 678381348672 in words is "six hundred seventy-eight billion, three hundred eighty-one million, three hundred forty-eight thousand, six hundred seventy-two".