204901116173 has 8 divisors (see below), whose sum is σ = 220670366616. Its totient is φ = 189132955200.

The previous prime is 204901116139. The next prime is 204901116193. The reversal of 204901116173 is 371611109402.

It can be written as a sum of positive squares in 4 ways, for example, as 99968527684 + 104932588489 = 316178^2 + 323933^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 204901116173 - 2²⁴ = 204884338957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204901116193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141563 + ... + 655623.

It is an arithmetic number, because the mean of its divisors is an integer number (27583795827).

Almost surely, 2^204901116173 is an apocalyptic number.

It is an amenable number.

204901116173 is a deficient number, since it is larger than the sum of its proper divisors (15769250443).

204901116173 is a wasteful number, since it uses less digits than its factorization.

204901116173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544735.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 204901116173 in words is "two hundred four billion, nine hundred one million, one hundred sixteen thousand, one hundred seventy-three".