205426434146 has 8 divisors (see below), whose sum is σ = 318079640064. Its totient is φ = 99399887460.

The previous prime is 205426434137. The next prime is 205426434149. The reversal of 205426434146 is 641434624502.

205426434146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (205426434149) 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 3 ways as a sum of consecutive naturals, for example, 1656664730 + ... + 1656664853.

It is an arithmetic number, because the mean of its divisors is an integer number (39759955008).

Almost surely, 2^205426434146 is an apocalyptic number.

205426434146 is a deficient number, since it is larger than the sum of its proper divisors (112653205918).

205426434146 is a wasteful number, since it uses less digits than its factorization.

205426434146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313329616.

The product of its (nonzero) digits is 552960, while the sum is 41.

The spelling of 205426434146 in words is "two hundred five billion, four hundred twenty-six million, four hundred thirty-four thousand, one hundred forty-six".