205194258396 has 96 divisors (see below), whose sum is σ = 539764205120. Its totient is φ = 67399630848.

The previous prime is 205194258359. The next prime is 205194258419. The reversal of 205194258396 is 693852491502.

205194258396 is a `hidden beast` number, since 2 + 0 + 5 + 19 + 42 + 583 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9078966 + ... + 9101538.

Almost surely, 2^205194258396 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 205194258396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269882102560).

205194258396 is an abundant number, since it is smaller than the sum of its proper divisors (334569946724).

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

205194258396 is a wasteful number, since it uses less digits than its factorization.

205194258396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23812 (or 23804 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 205194258396 in words is "two hundred five billion, one hundred ninety-four million, two hundred fifty-eight thousand, three hundred ninety-six".