204661797853 has 8 divisors (see below), whose sum is σ = 205136309376. Its totient is φ = 204187762800.

The previous prime is 204661797761. The next prime is 204661797863. The reversal of 204661797853 is 358797166402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204661797853 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 (204661797863) 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, 748248 + ... + 984478.

It is an arithmetic number, because the mean of its divisors is an integer number (25642038672).

It is a 1-persistent number, because it is pandigital, but 2⋅204661797853 = 409323595706 is not.

Almost surely, 2^204661797853 is an apocalyptic number.

It is an amenable number.

204661797853 is a deficient number, since it is larger than the sum of its proper divisors (474511523).

204661797853 is a wasteful number, since it uses less digits than its factorization.

204661797853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238235.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 204661797853 in words is "two hundred four billion, six hundred sixty-one million, seven hundred ninety-seven thousand, eight hundred fifty-three".