204020616330465 has 16 divisors (see below), whose sum is σ = 356108712140736. Its totient is φ = 98919086705600.

The previous prime is 204020616330353. The next prime is 204020616330469. The reversal of 204020616330465 is 564033616020402.

It is a happy number.

204020616330465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204020616330465 - 2¹² = 204020616326369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204020616330469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618244291746 + ... + 618244292075.

It is an arithmetic number, because the mean of its divisors is an integer number (22256794508796).

Almost surely, 2^{204020616330465} is an apocalyptic number.

It is an amenable number.

204020616330465 is a deficient number, since it is larger than the sum of its proper divisors (152088095810271).

204020616330465 is a wasteful number, since it uses less digits than its factorization.

204020616330465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236488583840.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 204020616330465 in words is "two hundred four trillion, twenty billion, six hundred sixteen million, three hundred thirty thousand, four hundred sixty-five".