16221082331559 has 32 divisors (see below), whose sum is σ = 24747171710976. Its totient is φ = 9258196802400.

The previous prime is 16221082331551. The next prime is 16221082331569. The reversal of 16221082331559 is 95513328012261.

It is not a de Polignac number, because 16221082331559 - 2³ = 16221082331551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16221082331551) 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 31 ways as a sum of consecutive naturals, for example, 61633404 + ... + 61896030.

It is an arithmetic number, because the mean of its divisors is an integer number (773349115968).

Almost surely, 2^{16221082331559} is an apocalyptic number.

16221082331559 is a deficient number, since it is larger than the sum of its proper divisors (8526089379417).

16221082331559 is a wasteful number, since it uses less digits than its factorization.

16221082331559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266115.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 16221082331559 in words is "sixteen trillion, two hundred twenty-one billion, eighty-two million, three hundred thirty-one thousand, five hundred fifty-nine".