204213260666 has 8 divisors (see below), whose sum is σ = 306329503860. Its totient is φ = 102103426048.

The previous prime is 204213260651. The next prime is 204213260681. The reversal of 204213260666 is 666062312402.

204213260666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204213260651) and next prime (204213260681).

It can be written as a sum of positive squares in 2 ways, for example, as 174845241025 + 29368019641 = 418145^2 + 171371^2 .

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

It is an unprimeable number.

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, 1521671 + ... + 1650426.

Almost surely, 2^204213260666 is an apocalyptic number.

204213260666 is a deficient number, since it is larger than the sum of its proper divisors (102116243194).

204213260666 is a wasteful number, since it uses less digits than its factorization.

204213260666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204288.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 204213260666 in words is "two hundred four billion, two hundred thirteen million, two hundred sixty thousand, six hundred sixty-six".