204388852161 has 64 divisors (see below), whose sum is σ = 304401162240. Its totient is φ = 121194627840.

The previous prime is 204388852127. The next prime is 204388852229. The reversal of 204388852161 is 161258883402.

It is not a de Polignac number, because 204388852161 - 2¹⁰ = 204388851137 is a prime.

It is a super-2 number, since 2×204388852161² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204388852161.

It is not an unprimeable number, because it can be changed into a prime (204388854161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49715496 + ... + 49719606.

It is an arithmetic number, because the mean of its divisors is an integer number (4756268160).

Almost surely, 2^204388852161 is an apocalyptic number.

It is an amenable number.

204388852161 is a deficient number, since it is larger than the sum of its proper divisors (100012310079).

204388852161 is a wasteful number, since it uses less digits than its factorization.

204388852161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606.

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 204388852161 in words is "two hundred four billion, three hundred eighty-eight million, eight hundred fifty-two thousand, one hundred sixty-one".