205152535505 has 16 divisors (see below), whose sum is σ = 248035042944. Its totient is φ = 162891895680.

The previous prime is 205152535499. The next prime is 205152535517. The reversal of 205152535505 is 505535251502.

It is not a de Polignac number, because 205152535505 - 2¹⁰ = 205152534481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79202 + ... + 645428.

It is an arithmetic number, because the mean of its divisors is an integer number (15502190184).

Almost surely, 2^205152535505 is an apocalyptic number.

It is an amenable number.

205152535505 is a deficient number, since it is larger than the sum of its proper divisors (42882507439).

205152535505 is a wasteful number, since it uses less digits than its factorization.

205152535505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566776.

The product of its (nonzero) digits is 187500, while the sum is 38.

The spelling of 205152535505 in words is "two hundred five billion, one hundred fifty-two million, five hundred thirty-five thousand, five hundred five".