195984888489591 has 32 divisors (see below), whose sum is σ = 264395863438848. Its totient is φ = 129120148214400.

The previous prime is 195984888489583. The next prime is 195984888489613.

195984888489591 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 195984888489591 - 2³ = 195984888489583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195984888489391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2431443496 + ... + 2431524098.

It is an arithmetic number, because the mean of its divisors is an integer number (8262370732464).

Almost surely, 2^{195984888489591} is an apocalyptic number.

195984888489591 is a deficient number, since it is larger than the sum of its proper divisors (68410974949257).

195984888489591 is a wasteful number, since it uses less digits than its factorization.

195984888489591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95671.

The product of its digits is 85996339200, while the sum is 96.

The spelling of 195984888489591 in words is "one hundred ninety-five trillion, nine hundred eighty-four billion, eight hundred eighty-eight million, four hundred eighty-nine thousand, five hundred ninety-one".