216580195 has 16 divisors (see below), whose sum is σ = 284481792. Its totient is φ = 157311360.

The previous prime is 216580181. The next prime is 216580249. The reversal of 216580195 is 591085612.

It is not a de Polignac number, because 216580195 - 2⁹ = 216579683 is a prime.

It is a Duffinian number.

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, 23347 + ... + 31276.

It is an arithmetic number, because the mean of its divisors is an integer number (17780112).

Almost surely, 2^216580195 is an apocalyptic number.

216580195 is a deficient number, since it is larger than the sum of its proper divisors (67901597).

216580195 is a wasteful number, since it uses less digits than its factorization.

216580195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54702.

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 216580195 is about 14716.6638542844. The cubic root of 216580195 is about 600.5367373045.

The spelling of 216580195 in words is "two hundred sixteen million, five hundred eighty thousand, one hundred ninety-five".