16044652221 has 32 divisors (see below), whose sum is σ = 24149338752. Its totient is φ = 9408752640.

The previous prime is 16044652181. The next prime is 16044652223. The reversal of 16044652221 is 12225644061.

It is not a de Polignac number, because 16044652221 - 2⁹ = 16044651709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16044652223) 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, 47920 + ... + 185433.

It is an arithmetic number, because the mean of its divisors is an integer number (754666836).

Almost surely, 2^16044652221 is an apocalyptic number.

It is an amenable number.

16044652221 is a deficient number, since it is larger than the sum of its proper divisors (8104686531).

16044652221 is a wasteful number, since it uses less digits than its factorization.

16044652221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233453.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 16044652221 in words is "sixteen billion, forty-four million, six hundred fifty-two thousand, two hundred twenty-one".