216199850505 has 16 divisors (see below), whose sum is σ = 366267982464. Its totient is φ = 108523846400.

The previous prime is 216199850497. The next prime is 216199850521. The reversal of 216199850505 is 505058991612.

It is not a de Polignac number, because 216199850505 - 2³ = 216199850497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423921021 + ... + 423921530.

It is an arithmetic number, because the mean of its divisors is an integer number (22891748904).

Almost surely, 2^216199850505 is an apocalyptic number.

It is an amenable number.

216199850505 is a deficient number, since it is larger than the sum of its proper divisors (150068131959).

216199850505 is a wasteful number, since it uses less digits than its factorization.

216199850505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847842576.

The product of its (nonzero) digits is 972000, while the sum is 51.

The spelling of 216199850505 in words is "two hundred sixteen billion, one hundred ninety-nine million, eight hundred fifty thousand, five hundred five".