204145440107 has 16 divisors (see below), whose sum is σ = 234891801600. Its totient is φ = 173795133600.

The previous prime is 204145440067. The next prime is 204145440127. The reversal of 204145440107 is 701044541402.

It is a cyclic number.

It is not a de Polignac number, because 204145440107 - 2⁶ = 204145440043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204145440127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9151994 + ... + 9174272.

It is an arithmetic number, because the mean of its divisors is an integer number (14680737600).

Almost surely, 2^204145440107 is an apocalyptic number.

204145440107 is a deficient number, since it is larger than the sum of its proper divisors (30746361493).

204145440107 is a wasteful number, since it uses less digits than its factorization.

204145440107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31106.

The product of its (nonzero) digits is 17920, while the sum is 32.

Adding to 204145440107 its reverse (701044541402), we get a palindrome (905189981509).

The spelling of 204145440107 in words is "two hundred four billion, one hundred forty-five million, four hundred forty thousand, one hundred seven".