205113326256 has 120 divisors (see below), whose sum is σ = 605643649520. Its totient is φ = 64622665728.

The previous prime is 205113326239. The next prime is 205113326279. The reversal of 205113326256 is 652623311502.

205113326256 is a `hidden beast` number, since 2 + 0 + 511 + 3 + 32 + 62 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 205113326256.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1098120 + ... + 1271256.

Almost surely, 2^205113326256 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 205113326256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302821824760).

205113326256 is an abundant number, since it is smaller than the sum of its proper divisors (400530323264).

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

205113326256 is a wasteful number, since it uses less digits than its factorization.

205113326256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173603 (or 173594 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 205113326256 its reverse (652623311502), we get a palindrome (857736637758).

The spelling of 205113326256 in words is "two hundred five billion, one hundred thirteen million, three hundred twenty-six thousand, two hundred fifty-six".