16349667890009 has 8 divisors (see below), whose sum is σ = 16367898926568. Its totient is φ = 16331438522880.

The previous prime is 16349667889981. The next prime is 16349667890081. The reversal of 16349667890009 is 90009876694361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4520216166400 + 11829451723609 = 2126080^2 + 3439397^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16349667890009 is a prime.

It is a super-2 number, since 2×16349667890009² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16349667895009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19721549 + ... + 20533845.

It is an arithmetic number, because the mean of its divisors is an integer number (2045987365821).

Almost surely, 2^{16349667890009} is an apocalyptic number.

It is an amenable number.

16349667890009 is a deficient number, since it is larger than the sum of its proper divisors (18231036559).

16349667890009 is an equidigital number, since it uses as much as digits as its factorization.

16349667890009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834715.

The product of its (nonzero) digits is 105815808, while the sum is 68.

The spelling of 16349667890009 in words is "sixteen trillion, three hundred forty-nine billion, six hundred sixty-seven million, eight hundred ninety thousand, nine".