16381299086209 has 4 divisors (see below), whose sum is σ = 16401107187504. Its totient is φ = 16361490984916.

The previous prime is 16381299086197. The next prime is 16381299086237. The reversal of 16381299086209 is 90268099218361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16381299086209 - 2¹³ = 16381299078017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16381299086609) 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, 9904049407 + ... + 9904051060.

It is an arithmetic number, because the mean of its divisors is an integer number (4100276796876).

Almost surely, 2^{16381299086209} is an apocalyptic number.

It is an amenable number.

16381299086209 is a deficient number, since it is larger than the sum of its proper divisors (19808101295).

16381299086209 is an equidigital number, since it uses as much as digits as its factorization.

16381299086209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19808101294.

The product of its (nonzero) digits is 20155392, while the sum is 64.

The spelling of 16381299086209 in words is "sixteen trillion, three hundred eighty-one billion, two hundred ninety-nine million, eighty-six thousand, two hundred nine".