204043263909 has 8 divisors (see below), whose sum is σ = 272120144160. Its totient is φ = 135997613136.

The previous prime is 204043263899. The next prime is 204043263943. The reversal of 204043263909 is 909362340402.

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

It is not a de Polignac number, because 204043263909 - 2⁹ = 204043263397 is a prime.

It is a super-4 number, since 4×204043263909⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204043263959) 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, 7792119 + ... + 7818260.

It is an arithmetic number, because the mean of its divisors is an integer number (34015018020).

Almost surely, 2^204043263909 is an apocalyptic number.

It is an amenable number.

204043263909 is a deficient number, since it is larger than the sum of its proper divisors (68076880251).

204043263909 is a wasteful number, since it uses less digits than its factorization.

204043263909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15614739.

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 204043263909 in words is "two hundred four billion, forty-three million, two hundred sixty-three thousand, nine hundred nine".