204492773197 has 4 divisors (see below), whose sum is σ = 213383763360. Its totient is φ = 195601783036.

The previous prime is 204492773189. The next prime is 204492773269. The reversal of 204492773197 is 791377294402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791377294402 = 2 ⋅395688647201.

It is a cyclic number.

It is not a de Polignac number, because 204492773197 - 2³ = 204492773189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204492773117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4445495047 + ... + 4445495092.

It is an arithmetic number, because the mean of its divisors is an integer number (53345940840).

Almost surely, 2^204492773197 is an apocalyptic number.

It is an amenable number.

204492773197 is a deficient number, since it is larger than the sum of its proper divisors (8890990163).

204492773197 is an equidigital number, since it uses as much as digits as its factorization.

204492773197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890990162.

The product of its (nonzero) digits is 5334336, while the sum is 55.

The spelling of 204492773197 in words is "two hundred four billion, four hundred ninety-two million, seven hundred seventy-three thousand, one hundred ninety-seven".