205191300195 has 128 divisors (see below), whose sum is σ = 427207680000. Its totient is φ = 93404223360.

The previous prime is 205191300163. The next prime is 205191300199. The reversal of 205191300195 is 591003191502.

205191300195 is a `hidden beast` number, since 2 + 0 + 519 + 130 + 0 + 1 + 9 + 5 = 666.

It is not a de Polignac number, because 205191300195 - 2⁵ = 205191300163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205191300199) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11057625 + ... + 11076165.

It is an arithmetic number, because the mean of its divisors is an integer number (3337560000).

Almost surely, 2^205191300195 is an apocalyptic number.

205191300195 is an abundant number, since it is smaller than the sum of its proper divisors (222016379805).

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

205191300195 is a wasteful number, since it uses less digits than its factorization.

205191300195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18815 (or 18795 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

Adding to 205191300195 its reverse (591003191502), we get a palindrome (796194491697).

The spelling of 205191300195 in words is "two hundred five billion, one hundred ninety-one million, three hundred thousand, one hundred ninety-five".