205120849207 has 8 divisors (see below), whose sum is σ = 205352330112. Its totient is φ = 204889433400.

The previous prime is 205120849169. The next prime is 205120849243. The reversal of 205120849207 is 702948021502.

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 205120849207 - 2⁷ = 205120849079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205120849207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205120849247) 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, 8990268 + ... + 9013054.

It is an arithmetic number, because the mean of its divisors is an integer number (25669041264).

Almost surely, 2^205120849207 is an apocalyptic number.

205120849207 is a deficient number, since it is larger than the sum of its proper divisors (231480905).

205120849207 is a wasteful number, since it uses less digits than its factorization.

205120849207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32549.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 205120849207 in words is "two hundred five billion, one hundred twenty million, eight hundred forty-nine thousand, two hundred seven".