16805348841 has 4 divisors (see below), whose sum is σ = 22407131792. Its totient is φ = 11203565892.

The previous prime is 16805348821. The next prime is 16805348863. The reversal of 16805348841 is 14884350861.

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 de Polignac number, because none of the positive numbers 2^k-16805348841 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 (16805348801) 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, 2800891471 + ... + 2800891476.

It is an arithmetic number, because the mean of its divisors is an integer number (5601782948).

Almost surely, 2^16805348841 is an apocalyptic number.

It is an amenable number.

16805348841 is a deficient number, since it is larger than the sum of its proper divisors (5601782951).

16805348841 is an equidigital number, since it uses as much as digits as its factorization.

16805348841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601782950.

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 16805348841 in words is "sixteen billion, eight hundred five million, three hundred forty-eight thousand, eight hundred forty-one".