204450066065 has 16 divisors (see below), whose sum is σ = 280524280320. Its totient is φ = 140126521920.

The previous prime is 204450066053. The next prime is 204450066071. The reversal of 204450066065 is 560660054402.

It is not a de Polignac number, because 204450066065 - 2¹⁴ = 204450049681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339241 + ... + 1484070.

It is an arithmetic number, because the mean of its divisors is an integer number (17532767520).

Almost surely, 2^204450066065 is an apocalyptic number.

It is an amenable number.

204450066065 is a deficient number, since it is larger than the sum of its proper divisors (76074214255).

204450066065 is a wasteful number, since it uses less digits than its factorization.

204450066065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825392.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 204450066065 in words is "two hundred four billion, four hundred fifty million, sixty-six thousand, sixty-five".