204243015215 has 8 divisors (see below), whose sum is σ = 247618336560. Its totient is φ = 161709933312.

The previous prime is 204243015203. The next prime is 204243015233. The reversal of 204243015215 is 512510342402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204243015215 - 2⁸ = 204243014959 is a prime.

It is a super-2 number, since 2×204243015215² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210559325 + ... + 210560294.

It is an arithmetic number, because the mean of its divisors is an integer number (30952292070).

Almost surely, 2^204243015215 is an apocalyptic number.

204243015215 is a deficient number, since it is larger than the sum of its proper divisors (43375321345).

204243015215 is an equidigital number, since it uses as much as digits as its factorization.

204243015215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421119721.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 204243015215 its reverse (512510342402), we get a palindrome (716753357617).

The spelling of 204243015215 in words is "two hundred four billion, two hundred forty-three million, fifteen thousand, two hundred fifteen".