204426305606 has 4 divisors (see below), whose sum is σ = 306639458412. Its totient is φ = 102213152802.

The previous prime is 204426305597. The next prime is 204426305609. The reversal of 204426305606 is 606503624402.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×204426305606² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204426305606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204426305609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106576400 + ... + 51106576403.

It is an arithmetic number, because the mean of its divisors is an integer number (76659864603).

Almost surely, 2^204426305606 is an apocalyptic number.

204426305606 is a deficient number, since it is larger than the sum of its proper divisors (102213152806).

204426305606 is a wasteful number, since it uses less digits than its factorization.

204426305606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102213152805.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 204426305606 in words is "two hundred four billion, four hundred twenty-six million, three hundred five thousand, six hundred six".