859328486640 has 480 divisors, whose sum is σ = 3183244384320. Its totient is φ = 206453145600.

The previous prime is 859328486629. The next prime is 859328486677. The reversal of 859328486640 is 46684823958.

859328486640 is a `hidden beast` number, since 8 + 5 + 93 + 2 + 8 + 486 + 64 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 74790016 + ... + 74801504.

It is an arithmetic number, because the mean of its divisors is an integer number (6631759134).

Almost surely, 2^859328486640 is an apocalyptic number.

859328486640 is a gapful number since it is divisible by the number (80) 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 859328486640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591622192160).

859328486640 is an abundant number, since it is smaller than the sum of its proper divisors (2323915897680).

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

859328486640 is a wasteful number, since it uses less digits than its factorization.

859328486640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11713 (or 11704 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 859328486640 in words is "eight hundred fifty-nine billion, three hundred twenty-eight million, four hundred eighty-six thousand, six hundred forty".