16038047009 has 4 divisors (see below), whose sum is σ = 16039164804. Its totient is φ = 16036929216.

The previous prime is 16038046979. The next prime is 16038047017. The reversal of 16038047009 is 90074083061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1512976609 + 14525070400 = 38897^2 + 120520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16038047009 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 (16038047309) 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 3 ways as a sum of consecutive naturals, for example, 537092 + ... + 566165.

It is an arithmetic number, because the mean of its divisors is an integer number (4009791201).

Almost surely, 2^16038047009 is an apocalyptic number.

It is an amenable number.

16038047009 is a deficient number, since it is larger than the sum of its proper divisors (1117795).

16038047009 is a wasteful number, since it uses less digits than its factorization.

16038047009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117794.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 16038047009 in words is "sixteen billion, thirty-eight million, forty-seven thousand, nine".