16404441327 has 28 divisors (see below), whose sum is σ = 24691394640. Its totient is φ = 10893616128.

The previous prime is 16404441289. The next prime is 16404441341. The reversal of 16404441327 is 72314440461.

16404441327 is a `hidden beast` number, since 1 + 640 + 4 + 4 + 4 + 1 + 3 + 2 + 7 = 666.

It is not a de Polignac number, because 16404441327 - 2¹⁰ = 16404440303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16404441291 and 16404441300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404441377) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 143574 + ... + 231132.

Almost surely, 2^16404441327 is an apocalyptic number.

16404441327 is a deficient number, since it is larger than the sum of its proper divisors (8286953313).

16404441327 is an frugal number, since it uses more digits than its factorization.

16404441327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87834 (or 87819 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

Adding to 16404441327 its reverse (72314440461), we get a palindrome (88718881788).

The spelling of 16404441327 in words is "sixteen billion, four hundred four million, four hundred forty-one thousand, three hundred twenty-seven".