205153356636 has 96 divisors (see below), whose sum is σ = 563360071680. Its totient is φ = 64339667712.

The previous prime is 205153356613. The next prime is 205153356649. The reversal of 205153356636 is 636653351502.

205153356636 is a `hidden beast` number, since 2 + 0 + 5 + 1 + 5 + 3 + 3 + 5 + 6 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 205153356591 and 205153356600.

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, 5789605 + ... + 5824931.

It is an arithmetic number, because the mean of its divisors is an integer number (5868334080).

Almost surely, 2^205153356636 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 205153356636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281680035840).

205153356636 is an abundant number, since it is smaller than the sum of its proper divisors (358206715044).

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

205153356636 is a wasteful number, since it uses less digits than its factorization.

205153356636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38520 (or 38512 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 45.

The spelling of 205153356636 in words is "two hundred five billion, one hundred fifty-three million, three hundred fifty-six thousand, six hundred thirty-six".