195711345211 has 4 divisors (see below), whose sum is σ = 195712791624. Its totient is φ = 195709898800.

The previous prime is 195711345209. The next prime is 195711345217. The reversal of 195711345211 is 112543117591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195711345211 - 2¹ = 195711345209 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195711345217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496570 + ... + 798751.

It is an arithmetic number, because the mean of its divisors is an integer number (48928197906).

Almost surely, 2^195711345211 is an apocalyptic number.

195711345211 is a deficient number, since it is larger than the sum of its proper divisors (1446413).

195711345211 is a wasteful number, since it uses less digits than its factorization.

195711345211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446412.

The product of its digits is 37800, while the sum is 40.

The spelling of 195711345211 in words is "one hundred ninety-five billion, seven hundred eleven million, three hundred forty-five thousand, two hundred eleven".