865216728195 has 16 divisors (see below), whose sum is σ = 1384477140480. Its totient is φ = 461405463264.

The previous prime is 865216728149. The next prime is 865216728287. The reversal of 865216728195 is 591827612568.

It is not a de Polignac number, because 865216728195 - 2³² = 860921760899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2551249 + ... + 2870418.

It is an arithmetic number, because the mean of its divisors is an integer number (86529821280).

Almost surely, 2^865216728195 is an apocalyptic number.

865216728195 is a deficient number, since it is larger than the sum of its proper divisors (519260412285).

865216728195 is a wasteful number, since it uses less digits than its factorization.

865216728195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432314.

The product of its digits is 14515200, while the sum is 60.

The spelling of 865216728195 in words is "eight hundred sixty-five billion, two hundred sixteen million, seven hundred twenty-eight thousand, one hundred ninety-five".