16065499989 has 32 divisors (see below), whose sum is σ = 28111887360. Its totient is φ = 7906464000.

The previous prime is 16065499981. The next prime is 16065500051. The reversal of 16065499989 is 98999456061.

It is not a de Polignac number, because 16065499989 - 2³ = 16065499981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16065499981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1825812 + ... + 1834589.

It is an arithmetic number, because the mean of its divisors is an integer number (878496480).

Almost surely, 2^16065499989 is an apocalyptic number.

16065499989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16065499989 is a deficient number, since it is larger than the sum of its proper divisors (12046387371).

16065499989 is a wasteful number, since it uses less digits than its factorization.

16065499989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660441.

The product of its (nonzero) digits is 37791360, while the sum is 66.

The spelling of 16065499989 in words is "sixteen billion, sixty-five million, four hundred ninety-nine thousand, nine hundred eighty-nine".