205115504130 has 96 divisors (see below), whose sum is σ = 564810246000. Its totient is φ = 51467268096.

The previous prime is 205115504107. The next prime is 205115504149. The reversal of 205115504130 is 31405511502.

205115504130 is a `hidden beast` number, since 20 + 5 + 1 + 1 + 5 + 504 + 130 = 666.

205115504130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 12121349409 + 192994154721 = 110097^2 + 439311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 205115504094 and 205115504103.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7221196 + ... + 7249544.

Almost surely, 2^205115504130 is an apocalyptic number.

205115504130 is an abundant number, since it is smaller than the sum of its proper divisors (359694741870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205115504130 is a wasteful number, since it uses less digits than its factorization.

205115504130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33108 (or 33105 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 205115504130 in words is "two hundred five billion, one hundred fifteen million, five hundred four thousand, one hundred thirty".