859091256660 has 192 divisors, whose sum is σ = 2961149184000. Its totient is φ = 181222783488.

The previous prime is 859091256623. The next prime is 859091256671. The reversal of 859091256660 is 66652190958.

It is a self number, because there is not a number n which added to its sum of digits gives 859091256660.

It is a congruent number.

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, 34380051 + ... + 34405029.

It is an arithmetic number, because the mean of its divisors is an integer number (15422652000).

Almost surely, 2^859091256660 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 859091256660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480574592000).

859091256660 is an abundant number, since it is smaller than the sum of its proper divisors (2102057927340).

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

859091256660 is a wasteful number, since it uses less digits than its factorization.

859091256660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31310 (or 31308 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 57.

The spelling of 859091256660 in words is "eight hundred fifty-nine billion, ninety-one million, two hundred fifty-six thousand, six hundred sixty".