16044528889 has 9 divisors (see below), whose sum is σ = 17046129871. Its totient is φ = 15098706400.

The previous prime is 16044528883. The next prime is 16044528911. The reversal of 16044528889 is 98882544061.

The square root of 16044528889 is 126667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12491415225 + 3553113664 = 111765^2 + 59608^2 .

It is not a de Polignac number, because 16044528889 - 2³ = 16044528881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16044528881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2149614 + ... + 2157064.

Almost surely, 2^16044528889 is an apocalyptic number.

16044528889 is the 126667-th square number.

16044528889 is the 63334-th centered octagonal number.

It is an amenable number.

16044528889 is a deficient number, since it is larger than the sum of its proper divisors (1001600982).

16044528889 is an frugal number, since it uses more digits than its factorization.

16044528889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14936 (or 7468 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 16044528889 in words is "sixteen billion, forty-four million, five hundred twenty-eight thousand, eight hundred eighty-nine".