678293079552 has 240 divisors, whose sum is σ = 2185234653888. Its totient is φ = 200762634240.

The previous prime is 678293079523. The next prime is 678293079577. The reversal of 678293079552 is 255970392876.

678293079552 is a `hidden beast` number, since 6 + 7 + 8 + 2 + 9 + 3 + 0 + 79 + 552 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 678293079552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2023983 + ... + 2335185.

Almost surely, 2^678293079552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678293079552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092617326944).

678293079552 is an abundant number, since it is smaller than the sum of its proper divisors (1506941574336).

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

678293079552 is a wasteful number, since it uses less digits than its factorization.

678293079552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311281 (or 311262 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 63.

The spelling of 678293079552 in words is "six hundred seventy-eight billion, two hundred ninety-three million, seventy-nine thousand, five hundred fifty-two".