16825338243 has 24 divisors (see below), whose sum is σ = 29408996448. Its totient is φ = 9048920832.

The previous prime is 16825338241. The next prime is 16825338247. The reversal of 16825338243 is 34283352861.

16825338243 is a `hidden beast` number, since 16 + 8 + 253 + 382 + 4 + 3 = 666.

It is not a de Polignac number, because 16825338243 - 2¹ = 16825338241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16825338241) 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 23 ways as a sum of consecutive naturals, for example, 7853896 + ... + 7856037.

It is an arithmetic number, because the mean of its divisors is an integer number (1225374852).

Almost surely, 2^16825338243 is an apocalyptic number.

16825338243 is a deficient number, since it is larger than the sum of its proper divisors (12583658205).

16825338243 is a wasteful number, since it uses less digits than its factorization.

16825338243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15709963 (or 15709960 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 16825338243 in words is "sixteen billion, eight hundred twenty-five million, three hundred thirty-eight thousand, two hundred forty-three".