16309465619009 has 4 divisors (see below), whose sum is σ = 16309508489940. Its totient is φ = 16309422748080.

The previous prime is 16309465619003. The next prime is 16309465619039. The reversal of 16309465619009 is 90091656490361.

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 9320167881025 + 6989297737984 = 3052895^2 + 2643728^2 .

It is a cyclic number.

It is not a de Polignac number, because 16309465619009 - 2³² = 16305170651713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16309465619003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20859662 + ... + 21627399.

It is an arithmetic number, because the mean of its divisors is an integer number (4077377122485).

Almost surely, 2^{16309465619009} is an apocalyptic number.

It is an amenable number.

16309465619009 is a deficient number, since it is larger than the sum of its proper divisors (42870931).

16309465619009 is an equidigital number, since it uses as much as digits as its factorization.

16309465619009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42870930.

The product of its (nonzero) digits is 9447840, while the sum is 59.

The spelling of 16309465619009 in words is "sixteen trillion, three hundred nine billion, four hundred sixty-five million, six hundred nineteen thousand, nine".