16221473855 has 8 divisors (see below), whose sum is σ = 19466654064. Its totient is φ = 12976588800.

The previous prime is 16221473803. The next prime is 16221473857. The reversal of 16221473855 is 55837412261.

16221473855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16221473855 - 2¹⁶ = 16221408319 is a prime.

It is a super-2 number, since 2×16221473855² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221473857) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 74060 + ... + 194750.

It is an arithmetic number, because the mean of its divisors is an integer number (2433331758).

Almost surely, 2^16221473855 is an apocalyptic number.

16221473855 is a deficient number, since it is larger than the sum of its proper divisors (3245180209).

16221473855 is a wasteful number, since it uses less digits than its factorization.

16221473855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147577.

The product of its digits is 403200, while the sum is 44.

The spelling of 16221473855 in words is "sixteen billion, two hundred twenty-one million, four hundred seventy-three thousand, eight hundred fifty-five".