9638205502086 has 384 divisors, whose sum is σ = 26648749670400. Its totient is φ = 2455455824640.

The previous prime is 9638205502063. The next prime is 9638205502111. The reversal of 9638205502086 is 6802055028369.

9638205502086 is a `hidden beast` number, since 9 + 6 + 3 + 8 + 2 + 0 + 550 + 2 + 0 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 762690960 + ... + 762703596.

It is an arithmetic number, because the mean of its divisors is an integer number (69397785600).

Almost surely, 2^{9638205502086} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9638205502086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13324374835200).

9638205502086 is an abundant number, since it is smaller than the sum of its proper divisors (17010544168314).

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

9638205502086 is a wasteful number, since it uses less digits than its factorization.

9638205502086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12984 (or 12981 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 9638205502086 in words is "nine trillion, six hundred thirty-eight billion, two hundred five million, five hundred two thousand, eighty-six".