204130664515 has 8 divisors (see below), whose sum is σ = 257849260560. Its totient is φ = 154709556192.

The previous prime is 204130664497. The next prime is 204130664531. The reversal of 204130664515 is 515466031402.

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 204130664515 - 2³⁷ = 66691711043 is a prime.

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, 1074371824 + ... + 1074372013.

It is an arithmetic number, because the mean of its divisors is an integer number (32231157570).

Almost surely, 2^204130664515 is an apocalyptic number.

204130664515 is a deficient number, since it is larger than the sum of its proper divisors (53718596045).

204130664515 is a wasteful number, since it uses less digits than its factorization.

204130664515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148743861.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 204130664515 its reverse (515466031402), we get a palindrome (719596695917).

The spelling of 204130664515 in words is "two hundred four billion, one hundred thirty million, six hundred sixty-four thousand, five hundred fifteen".