204456664411066 has 4 divisors (see below), whose sum is σ = 306684996616602. Its totient is φ = 102228332205532.

The previous prime is 204456664411061. The next prime is 204456664411081. The reversal of 204456664411066 is 660114466654402.

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

It can be written as a sum of positive squares in only one way, i.e., 180608629343041 + 23848035068025 = 13439071^2 + 4883445^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204456664410998 and 204456664411016.

It is not an unprimeable number, because it can be changed into a prime (204456664411061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51114166102765 + ... + 51114166102768.

Almost surely, 2^{204456664411066} is an apocalyptic number.

204456664411066 is a deficient number, since it is larger than the sum of its proper divisors (102228332205536).

204456664411066 is a wasteful number, since it uses less digits than its factorization.

204456664411066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102228332205535.

The product of its (nonzero) digits is 19906560, while the sum is 55.

The spelling of 204456664411066 in words is "two hundred four trillion, four hundred fifty-six billion, six hundred sixty-four million, four hundred eleven thousand, sixty-six".