678318382890 has 128 divisors (see below), whose sum is σ = 1839145501440. Its totient is φ = 177857337600.

The previous prime is 678318382877. The next prime is 678318382921. The reversal of 678318382890 is 98283813876.

678318382890 is a `hidden beast` number, since 6 + 7 + 8 + 318 + 38 + 289 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64738332 + ... + 64748808.

It is an arithmetic number, because the mean of its divisors is an integer number (14368324230).

Almost surely, 2^678318382890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678318382890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919572750720).

678318382890 is an abundant number, since it is smaller than the sum of its proper divisors (1160827118550).

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

678318382890 is a wasteful number, since it uses less digits than its factorization.

678318382890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14485 (or 14479 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

It can be divided in two parts, 678318 and 382890, that added together give a cube (1061208 = 102³).

The spelling of 678318382890 in words is "six hundred seventy-eight billion, three hundred eighteen million, three hundred eighty-two thousand, eight hundred ninety".