205670000135 has 16 divisors (see below), whose sum is σ = 249280329600. Its totient is φ = 162885542400.

The previous prime is 205670000077. The next prime is 205670000177. The reversal of 205670000135 is 531000076502.

It is not a de Polignac number, because 205670000135 - 2⁶ = 205670000071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205670000098 and 205670000107.

It is a congruent 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, 4623359 + ... + 4667631.

It is an arithmetic number, because the mean of its divisors is an integer number (15580020600).

Almost surely, 2^205670000135 is an apocalyptic number.

205670000135 is a deficient number, since it is larger than the sum of its proper divisors (43610329465).

205670000135 is a wasteful number, since it uses less digits than its factorization.

205670000135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53578.

The product of its (nonzero) digits is 6300, while the sum is 29.

Adding to 205670000135 its reverse (531000076502), we get a palindrome (736670076637).

The spelling of 205670000135 in words is "two hundred five billion, six hundred seventy million, one hundred thirty-five", and thus it is an aban number.