205323542512530 has 64 divisors (see below), whose sum is σ = 540695262078720. Its totient is φ = 49587572526336.

The previous prime is 205323542512523. The next prime is 205323542512559. The reversal of 205323542512530 is 35215245323502.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4966683310 + ... + 4966724649.

It is an arithmetic number, because the mean of its divisors is an integer number (8448363469980).

Almost surely, 2^{205323542512530} is an apocalyptic number.

205323542512530 is an abundant number, since it is smaller than the sum of its proper divisors (335371719566190).

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

205323542512530 is a wasteful number, since it uses less digits than its factorization.

205323542512530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933408035.

The product of its (nonzero) digits is 1080000, while the sum is 42.

The spelling of 205323542512530 in words is "two hundred five trillion, three hundred twenty-three billion, five hundred forty-two million, five hundred twelve thousand, five hundred thirty".