204072910297281 has 9 divisors (see below), whose sum is σ = 294772043443969. Its totient is φ = 136048578294036.

The previous prime is 204072910297261. The next prime is 204072910297283. The reversal of 204072910297281 is 182792019270402.

The square root of 204072910297281 is 14285409.

It is a perfect power (a square), and thus also a powerful number.

204072910297281 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 72 + 9 + 1 + 0 + 297 + 281 = 666.

204072910297281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 204072910297281 - 2⁴³ = 195276817275073 is a prime.

It is a super-2 number, since 2×204072910297281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204072910297283) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 40475326 + ... + 45237128.

Almost surely, 2^{204072910297281} is an apocalyptic number.

204072910297281 is the 14285409-th square number.

204072910297281 is the 7142705-th centered octagonal number.

It is an amenable number.

204072910297281 is a deficient number, since it is larger than the sum of its proper divisors (90699133146688).

204072910297281 is an frugal number, since it uses more digits than its factorization.

204072910297281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9523612 (or 4761806 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 204072910297281 in words is "two hundred four trillion, seventy-two billion, nine hundred ten million, two hundred ninety-seven thousand, two hundred eighty-one".