204786844101 has 36 divisors (see below), whose sum is σ = 344670610284. Its totient is φ = 116826192000.

The previous prime is 204786844063. The next prime is 204786844109. The reversal of 204786844101 is 101448687402.

It can be written as a sum of positive squares in 2 ways, for example, as 77247864225 + 127538979876 = 277935^2 + 357126^2 .

It is not a de Polignac number, because 204786844101 - 2¹⁴ = 204786827717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204786844109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 121290 + ... + 651371.

It is an arithmetic number, because the mean of its divisors is an integer number (9574183619).

Almost surely, 2^204786844101 is an apocalyptic number.

204786844101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

204786844101 is a deficient number, since it is larger than the sum of its proper divisors (139883766183).

204786844101 is a wasteful number, since it uses less digits than its factorization.

204786844101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773282 (or 773272 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 204786844101 in words is "two hundred four billion, seven hundred eighty-six million, eight hundred forty-four thousand, one hundred one".