204555240115 has 16 divisors (see below), whose sum is σ = 248023309248. Its totient is φ = 161941741056.

The previous prime is 204555240103. The next prime is 204555240133. The reversal of 204555240115 is 511042555402.

It is a cyclic number.

It is not a de Polignac number, because 204555240115 - 2⁵ = 204555240083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 599407 + ... + 876583.

It is an arithmetic number, because the mean of its divisors is an integer number (15501456828).

Almost surely, 2^204555240115 is an apocalyptic number.

204555240115 is a deficient number, since it is larger than the sum of its proper divisors (43468069133).

204555240115 is a wasteful number, since it uses less digits than its factorization.

204555240115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278718.

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 204555240115 its reverse (511042555402), we get a palindrome (715597795517).

The spelling of 204555240115 in words is "two hundred four billion, five hundred fifty-five million, two hundred forty thousand, one hundred fifteen".