16843995945599 has 4 divisors (see below), whose sum is σ = 16993057856736. Its totient is φ = 16694934034464.

The previous prime is 16843995945577. The next prime is 16843995945617. The reversal of 16843995945599 is 99554959934861.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16843995945599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16843995945599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16843995945899) 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, 74530955399 + ... + 74530955624.

It is an arithmetic number, because the mean of its divisors is an integer number (4248264464184).

Almost surely, 2^{16843995945599} is an apocalyptic number.

16843995945599 is a deficient number, since it is larger than the sum of its proper divisors (149061911137).

16843995945599 is a wasteful number, since it uses less digits than its factorization.

16843995945599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149061911136.

The product of its digits is 17006112000, while the sum is 86.

The spelling of 16843995945599 in words is "sixteen trillion, eight hundred forty-three billion, nine hundred ninety-five million, nine hundred forty-five thousand, five hundred ninety-nine".