16805243253 has 8 divisors (see below), whose sum is σ = 23586306400. Its totient is φ = 10613837808.

The previous prime is 16805243239. The next prime is 16805243281. The reversal of 16805243253 is 35234250861.

It is a happy number.

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

It is not a de Polignac number, because 16805243253 - 2⁴ = 16805243237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16805243153) 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, 147414358 + ... + 147414471.

It is an arithmetic number, because the mean of its divisors is an integer number (2948288300).

Almost surely, 2^16805243253 is an apocalyptic number.

It is an amenable number.

16805243253 is a deficient number, since it is larger than the sum of its proper divisors (6781063147).

16805243253 is a wasteful number, since it uses less digits than its factorization.

16805243253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294828851.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 16805243253 in words is "sixteen billion, eight hundred five million, two hundred forty-three thousand, two hundred fifty-three".