204106561266266 has 8 divisors (see below), whose sum is σ = 306193218122484. Its totient is φ = 102042155225440.

The previous prime is 204106561266263. The next prime is 204106561266271. The reversal of 204106561266266 is 662662165601402.

It can be written as a sum of positive squares in 2 ways, for example, as 196872188143225 + 7234373123041 = 14031115^2 + 2689679^2 .

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 (204106561266263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5562680915 + ... + 5562717606.

Almost surely, 2^{204106561266266} is an apocalyptic number.

204106561266266 is a deficient number, since it is larger than the sum of its proper divisors (102086656856218).

204106561266266 is a wasteful number, since it uses less digits than its factorization.

204106561266266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11125407696.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 204106561266266 in words is "two hundred four trillion, one hundred six billion, five hundred sixty-one million, two hundred sixty-six thousand, two hundred sixty-six".