204215658226 has 16 divisors (see below), whose sum is σ = 338444365824. Its totient is φ = 91923160384.

The previous prime is 204215658223. The next prime is 204215658239. The reversal of 204215658226 is 622856512402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (204215658223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130571890 + ... + 130573453.

It is an arithmetic number, because the mean of its divisors is an integer number (21152772864).

Almost surely, 2^204215658226 is an apocalyptic number.

204215658226 is a deficient number, since it is larger than the sum of its proper divisors (134228707598).

204215658226 is a wasteful number, since it uses less digits than its factorization.

204215658226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261145385.

The product of its (nonzero) digits is 460800, while the sum is 43.

The spelling of 204215658226 in words is "two hundred four billion, two hundred fifteen million, six hundred fifty-eight thousand, two hundred twenty-six".