16206220215 has 12 divisors (see below), whose sum is σ = 28090781784. Its totient is φ = 8643317424.

The previous prime is 16206220213. The next prime is 16206220243. The reversal of 16206220215 is 51202260261.

16206220215 is a `hidden beast` number, since 1 + 6 + 20 + 622 + 0 + 2 + 15 = 666.

It is not a de Polignac number, because 16206220215 - 2¹ = 16206220213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16206220211) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 180069069 + ... + 180069158.

It is an arithmetic number, because the mean of its divisors is an integer number (2340898482).

Almost surely, 2^16206220215 is an apocalyptic number.

16206220215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16206220215 is a deficient number, since it is larger than the sum of its proper divisors (11884561569).

16206220215 is a wasteful number, since it uses less digits than its factorization.

16206220215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360138238 (or 360138235 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 16206220215 its reverse (51202260261), we get a palindrome (67408480476).

The spelling of 16206220215 in words is "sixteen billion, two hundred six million, two hundred twenty thousand, two hundred fifteen".