195585779049 has 16 divisors (see below), whose sum is σ = 283361402880. Its totient is φ = 119543089680.

The previous prime is 195585779033. The next prime is 195585779149. The reversal of 195585779049 is 940977585591.

It is not a de Polignac number, because 195585779049 - 2⁴ = 195585779033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195585779149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55342257 + ... + 55345790.

It is an arithmetic number, because the mean of its divisors is an integer number (17710087680).

Almost surely, 2^195585779049 is an apocalyptic number.

195585779049 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

195585779049 is a deficient number, since it is larger than the sum of its proper divisors (87775623831).

195585779049 is a wasteful number, since it uses less digits than its factorization.

195585779049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110688100.

The product of its (nonzero) digits is 142884000, while the sum is 69.

The spelling of 195585779049 in words is "one hundred ninety-five billion, five hundred eighty-five million, seven hundred seventy-nine thousand, forty-nine".