16165882321 has 8 divisors (see below), whose sum is σ = 16551028224. Its totient is φ = 15782452800.

The previous prime is 16165882283. The next prime is 16165882363. The reversal of 16165882321 is 12328856161.

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

It is a cyclic number.

It is not a de Polignac number, because 16165882321 - 2³¹ = 14018398673 is a prime.

It is a super-2 number, since 2×16165882321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16165882921) by changing a digit.

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, 410025 + ... + 447718.

It is an arithmetic number, because the mean of its divisors is an integer number (2068878528).

Almost surely, 2^16165882321 is an apocalyptic number.

It is an amenable number.

16165882321 is a deficient number, since it is larger than the sum of its proper divisors (385145903).

16165882321 is an equidigital number, since it uses as much as digits as its factorization.

16165882321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858191.

The product of its digits is 138240, while the sum is 43.

The spelling of 16165882321 in words is "sixteen billion, one hundred sixty-five million, eight hundred eighty-two thousand, three hundred twenty-one".