195986586215 has 16 divisors (see below), whose sum is σ = 282928005120. Its totient is φ = 127317601440.

The previous prime is 195986586143. The next prime is 195986586247. The reversal of 195986586215 is 512685689591.

It is not a de Polignac number, because 195986586215 - 2¹⁰ = 195986585191 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 147357671 + ... + 147359000.

It is an arithmetic number, because the mean of its divisors is an integer number (17683000320).

Almost surely, 2^195986586215 is an apocalyptic number.

195986586215 is a deficient number, since it is larger than the sum of its proper divisors (86941418905).

195986586215 is a wasteful number, since it uses less digits than its factorization.

195986586215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294716702.

The product of its digits is 46656000, while the sum is 65.

The spelling of 195986586215 in words is "one hundred ninety-five billion, nine hundred eighty-six million, five hundred eighty-six thousand, two hundred fifteen".