204021841597 has 24 divisors (see below), whose sum is σ = 249898871040. Its totient is φ = 165621335040.

The previous prime is 204021841589. The next prime is 204021841607. The reversal of 204021841597 is 795148120402.

It is not a de Polignac number, because 204021841597 - 2³ = 204021841589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204021841547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3186772 + ... + 3250162.

It is an arithmetic number, because the mean of its divisors is an integer number (10412452960).

Almost surely, 2^204021841597 is an apocalyptic number.

It is an amenable number.

204021841597 is a deficient number, since it is larger than the sum of its proper divisors (45877029443).

204021841597 is a wasteful number, since it uses less digits than its factorization.

204021841597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66881 (or 66874 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

Adding to 204021841597 its reverse (795148120402), we get a palindrome (999169961999).

The spelling of 204021841597 in words is "two hundred four billion, twenty-one million, eight hundred forty-one thousand, five hundred ninety-seven".