12816855241 has 8 divisors (see below), whose sum is σ = 13379050184. Its totient is φ = 12266017920.

The previous prime is 12816855239. The next prime is 12816855253. The reversal of 12816855241 is 14255861821.

It can be written as a sum of positive squares in 4 ways, for example, as 4069929616 + 8746925625 = 63796^2 + 93525^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12816855241 - 2¹ = 12816855239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12816855281) 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, 2837100 + ... + 2841613.

It is an arithmetic number, because the mean of its divisors is an integer number (1672381273).

Almost surely, 2^12816855241 is an apocalyptic number.

It is an amenable number.

12816855241 is a deficient number, since it is larger than the sum of its proper divisors (562194943).

12816855241 is an equidigital number, since it uses as much as digits as its factorization.

12816855241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678811.

The product of its digits is 153600, while the sum is 43.

The spelling of 12816855241 in words is "twelve billion, eight hundred sixteen million, eight hundred fifty-five thousand, two hundred forty-one".