204115024215 has 24 divisors (see below), whose sum is σ = 353815360080. Its totient is φ = 108856427904.

The previous prime is 204115024181. The next prime is 204115024229. The reversal of 204115024215 is 512420511402.

It is a happy number.

204115024215 is a `hidden beast` number, since 2 + 0 + 411 + 5 + 0 + 242 + 1 + 5 = 666.

204115024215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204115024215 - 2²¹ = 204112927063 is a prime.

It is a super-2 number, since 2×204115024215² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1046091 + ... + 1225779.

It is an arithmetic number, because the mean of its divisors is an integer number (14742306670).

Almost surely, 2^204115024215 is an apocalyptic number.

204115024215 is a deficient number, since it is larger than the sum of its proper divisors (149700335865).

204115024215 is a wasteful number, since it uses less digits than its factorization.

204115024215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204943 (or 204940 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 204115024215 its reverse (512420511402), we get a palindrome (716535535617).

The spelling of 204115024215 in words is "two hundred four billion, one hundred fifteen million, twenty-four thousand, two hundred fifteen".