16632221521327 has 2 divisors, whose sum is σ = 16632221521328. Its totient is φ = 16632221521326.

The previous prime is 16632221521301. The next prime is 16632221521367. The reversal of 16632221521327 is 72312512223661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16632221521327 - 2²³ = 16632213132719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16632221521367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8316110760663 + 8316110760664.

It is an arithmetic number, because the mean of its divisors is an integer number (8316110760664).

Almost surely, 2^{16632221521327} is an apocalyptic number.

16632221521327 is a deficient number, since it is larger than the sum of its proper divisors (1).

16632221521327 is an equidigital number, since it uses as much as digits as its factorization.

16632221521327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

Adding to 16632221521327 its reverse (72312512223661), we get a palindrome (88944733744988).

It can be divided in two parts, 166322 and 21521327, that added together give a square (21687649 = 4657²).

The spelling of 16632221521327 in words is "sixteen trillion, six hundred thirty-two billion, two hundred twenty-one million, five hundred twenty-one thousand, three hundred twenty-seven".