16064445333521 has 16 divisors (see below), whose sum is σ = 17523502875648. Its totient is φ = 14638477526400.

The previous prime is 16064445333491. The next prime is 16064445333529. The reversal of 16064445333521 is 12533354446061.

It is a happy number.

It is not a de Polignac number, because 16064445333521 - 2²² = 16064441139217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16064445333529) 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 15 ways as a sum of consecutive naturals, for example, 24368516 + ... + 25019061.

It is an arithmetic number, because the mean of its divisors is an integer number (1095218929728).

Almost surely, 2^{16064445333521} is an apocalyptic number.

It is an amenable number.

16064445333521 is a deficient number, since it is larger than the sum of its proper divisors (1459057542127).

16064445333521 is a wasteful number, since it uses less digits than its factorization.

16064445333521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49387912.

The product of its (nonzero) digits is 3110400, while the sum is 47.

Adding to 16064445333521 its reverse (12533354446061), we get a palindrome (28597799779582).

The spelling of 16064445333521 in words is "sixteen trillion, sixty-four billion, four hundred forty-five million, three hundred thirty-three thousand, five hundred twenty-one".