205135506630 has 48 divisors (see below), whose sum is σ = 533417333904. Its totient is φ = 54696133440.

The previous prime is 205135506607. The next prime is 205135506661. The reversal of 205135506630 is 36605531502.

205135506630 is a `hidden beast` number, since 2 + 0 + 5 + 13 + 5 + 5 + 0 + 6 + 630 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 626797 + ... + 896183.

It is an arithmetic number, because the mean of its divisors is an integer number (11112861123).

Almost surely, 2^205135506630 is an apocalyptic number.

205135506630 is an abundant number, since it is smaller than the sum of its proper divisors (328281827274).

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

205135506630 is a wasteful number, since it uses less digits than its factorization.

205135506630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277861 (or 277858 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The spelling of 205135506630 in words is "two hundred five billion, one hundred thirty-five million, five hundred six thousand, six hundred thirty".