205510342530 has 16 divisors (see below), whose sum is σ = 493224822144. Its totient is φ = 54802758000.

The previous prime is 205510342507. The next prime is 205510342579. The reversal of 205510342530 is 35243015502.

205510342530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 6850344751 = 205510342530 / (2 + 0 + 5 + 5 + 1 + 0 + 3 + 4 + 2 + 5 + 3 + 0).

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, 3425172346 + ... + 3425172405.

It is an arithmetic number, because the mean of its divisors is an integer number (30826551384).

Almost surely, 2^205510342530 is an apocalyptic number.

205510342530 is an abundant number, since it is smaller than the sum of its proper divisors (287714479614).

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

205510342530 is a wasteful number, since it uses less digits than its factorization.

205510342530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6850344761.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 205510342530 in words is "two hundred five billion, five hundred ten million, three hundred forty-two thousand, five hundred thirty".