195449719711 has 4 divisors (see below), whose sum is σ = 195511398400. Its totient is φ = 195388041024.

The previous prime is 195449719697. The next prime is 195449719721. The reversal of 195449719711 is 117917944591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117917944591 = 71 ⋅1660816121.

It is a cyclic number.

It is not a de Polignac number, because 195449719711 - 2¹¹ = 195449717663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195449719721) 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, 30834591 + ... + 30840928.

It is an arithmetic number, because the mean of its divisors is an integer number (48877849600).

Almost surely, 2^195449719711 is an apocalyptic number.

195449719711 is a deficient number, since it is larger than the sum of its proper divisors (61678689).

195449719711 is an equidigital number, since it uses as much as digits as its factorization.

195449719711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61678688.

The product of its digits is 2857680, while the sum is 58.

The spelling of 195449719711 in words is "one hundred ninety-five billion, four hundred forty-nine million, seven hundred nineteen thousand, seven hundred eleven".