205850099011 has 8 divisors (see below), whose sum is σ = 209355768000. Its totient is φ = 202344986280.

The previous prime is 205850098981. The next prime is 205850099023. The reversal of 205850099011 is 110990058502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205850099011 - 2²⁵ = 205816544579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205850099711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644640 + ... + 909538.

It is an arithmetic number, because the mean of its divisors is an integer number (26169471000).

Almost surely, 2^205850099011 is an apocalyptic number.

205850099011 is a deficient number, since it is larger than the sum of its proper divisors (3505668989).

205850099011 is a wasteful number, since it uses less digits than its factorization.

205850099011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278129.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 205850099011 in words is "two hundred five billion, eight hundred fifty million, ninety-nine thousand, eleven".