16805051005449 has 24 divisors (see below), whose sum is σ = 26147201044608. Its totient is φ = 9572593245600.

The previous prime is 16805051005447. The next prime is 16805051005541. The reversal of 16805051005449 is 94450015050861.

It is not a de Polignac number, because 16805051005449 - 2¹ = 16805051005447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16805051005398 and 16805051005407.

It is not an unprimeable number, because it can be changed into a prime (16805051005447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180268977 + ... + 180362174.

It is an arithmetic number, because the mean of its divisors is an integer number (1089466710192).

Almost surely, 2^{16805051005449} is an apocalyptic number.

It is an amenable number.

16805051005449 is a deficient number, since it is larger than the sum of its proper divisors (9342150039159).

16805051005449 is a wasteful number, since it uses less digits than its factorization.

16805051005449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360631485 (or 360631478 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 16805051005449 in words is "sixteen trillion, eight hundred five billion, fifty-one million, five thousand, four hundred forty-nine".