195277045409 has 12 divisors (see below), whose sum is σ = 203531242044. Its totient is φ = 187342314432.

The previous prime is 195277045373. The next prime is 195277045463. The reversal of 195277045409 is 904540772591.

It can be written as a sum of positive squares in 6 ways, for example, as 1487799184 + 193789246225 = 38572^2 + 440215^2 .

It is not a de Polignac number, because 195277045409 - 2²⁰ = 195275996833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195277045489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607442 + ... + 871515.

It is an arithmetic number, because the mean of its divisors is an integer number (16960936837).

Almost surely, 2^195277045409 is an apocalyptic number.

It is an amenable number.

195277045409 is a deficient number, since it is larger than the sum of its proper divisors (8254196635).

195277045409 is a wasteful number, since it uses less digits than its factorization.

195277045409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479172 (or 1479143 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 195277045409 in words is "one hundred ninety-five billion, two hundred seventy-seven million, forty-five thousand, four hundred nine".