204290536905 has 144 divisors (see below), whose sum is σ = 438740280576. Its totient is φ = 86102714880.

The previous prime is 204290536903. The next prime is 204290536939. The reversal of 204290536905 is 509635092402.

204290536905 is a `hidden beast` number, since 2 + 0 + 4 + 29 + 0 + 536 + 90 + 5 = 666.

204290536905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Wieferich number.

It is not a de Polignac number, because 204290536905 - 2¹ = 204290536903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204290536903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 58184100 + ... + 58187610.

It is an arithmetic number, because the mean of its divisors is an integer number (3046807504).

Almost surely, 2^204290536905 is an apocalyptic number.

It is an amenable number.

204290536905 is an abundant number, since it is smaller than the sum of its proper divisors (234449743671).

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

204290536905 is a wasteful number, since it uses less digits than its factorization.

204290536905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4648 (or 4632 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 204290536905 in words is "two hundred four billion, two hundred ninety million, five hundred thirty-six thousand, nine hundred five".