857982010860 has 864 divisors, whose sum is σ = 3126068225280. Its totient is φ = 188717921280.

The previous prime is 857982010859. The next prime is 857982010909. The reversal of 857982010860 is 68010289758.

857982010860 is a `hidden beast` number, since 8 + 579 + 8 + 2 + 0 + 1 + 0 + 8 + 60 = 666.

It is a super-2 number, since 2×857982010860² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 857982010797 and 857982010806.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1837220347 + ... + 1837220813.

It is an arithmetic number, because the mean of its divisors is an integer number (3618134520).

Almost surely, 2^857982010860 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 857982010860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563034112640).

857982010860 is an abundant number, since it is smaller than the sum of its proper divisors (2268086214420).

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

857982010860 is a wasteful number, since it uses less digits than its factorization.

857982010860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 857982010860 in words is "eight hundred fifty-seven billion, nine hundred eighty-two million, ten thousand, eight hundred sixty".