199216655 has 8 divisors (see below), whose sum is σ = 260792784. Its totient is φ = 144884800.

The previous prime is 199216649. The next prime is 199216673. The reversal of 199216655 is 556612991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199216655 - 2¹⁰ = 199215631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811006 + ... + 1811115.

It is an arithmetic number, because the mean of its divisors is an integer number (32599098).

Almost surely, 2^199216655 is an apocalyptic number.

199216655 is a deficient number, since it is larger than the sum of its proper divisors (61576129).

199216655 is a wasteful number, since it uses less digits than its factorization.

199216655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622137.

The product of its digits is 145800, while the sum is 44.

The square root of 199216655 is about 14114.4130235727. The cubic root of 199216655 is about 584.0390437633.

The spelling of 199216655 in words is "one hundred ninety-nine million, two hundred sixteen thousand, six hundred fifty-five".